diff --git a/sys/dev/cxgbe/adapter.h b/sys/dev/cxgbe/adapter.h
--- a/sys/dev/cxgbe/adapter.h
+++ b/sys/dev/cxgbe/adapter.h
@@ -950,12 +950,9 @@
 	const struct devnames *names;
 
 	/* PCIe register resources */
-	int regs_rid;
 	struct resource *regs_res;
-	int msix_rid;
 	struct resource *msix_res;
 	bus_size_t mmio_len;
-	int udbs_rid;
 	struct resource *udbs_res;
 	volatile uint8_t *udbs_base;
 
diff --git a/sys/dev/cxgbe/t4_iov.c b/sys/dev/cxgbe/t4_iov.c
--- a/sys/dev/cxgbe/t4_iov.c
+++ b/sys/dev/cxgbe/t4_iov.c
@@ -52,7 +52,6 @@
 	bool sc_attached;
 
 	int pf;
-	int regs_rid;
 	struct resource *regs_res;
 };
 
@@ -240,15 +239,15 @@
 {
 	struct t4iov_softc *sc;
 	uint32_t pl_rev, whoami;
-	int error;
+	int error, rid;
 	uint8_t f;
 
 	sc = device_get_softc(dev);
 	sc->sc_dev = dev;
 
-	sc->regs_rid = PCIR_BAR(0);
+	rid = PCIR_BAR(0);
 	sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
-	    &sc->regs_rid, RF_ACTIVE);
+	    &rid, RF_ACTIVE);
 	if (sc->regs_res == NULL) {
 		device_printf(dev, "cannot map registers.\n");
 		return (ENXIO);
@@ -266,15 +265,13 @@
 	sc->sc_main = pci_find_dbsf(pci_get_domain(dev), pci_get_bus(dev),
 	    pci_get_slot(dev), f);
 	if (sc->sc_main == NULL) {
-		bus_release_resource(dev, SYS_RES_MEMORY, sc->regs_rid,
-		    sc->regs_res);
+		bus_release_resource(dev, sc->regs_res);
 		return (ENXIO);
 	}
 	if (T4_IS_MAIN_READY(sc->sc_main) == 0) {
 		error = t4iov_attach_child(dev);
 		if (error != 0)
-			bus_release_resource(dev, SYS_RES_MEMORY, sc->regs_rid,
-			    sc->regs_res);
+			bus_release_resource(dev, sc->regs_res);
 		return (error);
 	}
 	return (0);
@@ -357,8 +354,7 @@
 			return (error);
 	}
 	if (sc->regs_res) {
-		bus_release_resource(dev, SYS_RES_MEMORY, sc->regs_rid,
-		    sc->regs_res);
+		bus_release_resource(dev, sc->regs_res);
 	}
 	return (0);
 }
diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c
--- a/sys/dev/cxgbe/t4_main.c
+++ b/sys/dev/cxgbe/t4_main.c
@@ -1983,16 +1983,13 @@
 		pci_release_msi(dev);
 
 	if (sc->regs_res)
-		bus_release_resource(dev, SYS_RES_MEMORY, sc->regs_rid,
-		    sc->regs_res);
+		bus_release_resource(dev, sc->regs_res);
 
 	if (sc->udbs_res)
-		bus_release_resource(dev, SYS_RES_MEMORY, sc->udbs_rid,
-		    sc->udbs_res);
+		bus_release_resource(dev, sc->udbs_res);
 
 	if (sc->msix_res)
-		bus_release_resource(dev, SYS_RES_MEMORY, sc->msix_rid,
-		    sc->msix_res);
+		bus_release_resource(dev, sc->msix_res);
 
 	if (sc->l2t)
 		t4_free_l2t(sc);
@@ -4060,9 +4057,11 @@
 int
 t4_map_bars_0_and_4(struct adapter *sc)
 {
-	sc->regs_rid = PCIR_BAR(0);
+	int rid;
+
+	rid = PCIR_BAR(0);
 	sc->regs_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
-	    &sc->regs_rid, RF_ACTIVE);
+	    &rid, RF_ACTIVE);
 	if (sc->regs_res == NULL) {
 		device_printf(sc->dev, "cannot map registers.\n");
 		return (ENXIO);
@@ -4070,9 +4069,9 @@
 	sc->mmio_len = rman_get_size(sc->regs_res);
 	setbit(&sc->doorbells, DOORBELL_KDB);
 
-	sc->msix_rid = PCIR_BAR(4);
+	rid = PCIR_BAR(4);
 	sc->msix_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
-	    &sc->msix_rid, RF_ACTIVE);
+	    &rid, RF_ACTIVE);
 	if (sc->msix_res == NULL) {
 		device_printf(sc->dev, "cannot map MSI-X BAR.\n");
 		return (ENXIO);
@@ -4084,6 +4083,7 @@
 int
 t4_map_bar_2(struct adapter *sc)
 {
+	int rid;
 
 	/*
 	 * T4: only iWARP driver uses the userspace doorbells.  There is no need
@@ -4092,9 +4092,9 @@
 	if (is_t4(sc) && sc->rdmacaps == 0)
 		return (0);
 
-	sc->udbs_rid = PCIR_BAR(2);
+	rid = PCIR_BAR(2);
 	sc->udbs_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
-	    &sc->udbs_rid, RF_ACTIVE);
+	    &rid, RF_ACTIVE);
 	if (sc->udbs_res == NULL) {
 		device_printf(sc->dev, "cannot map doorbell BAR.\n");
 		return (ENXIO);