Index: sys/dev/pci/pci_host_generic.c
===================================================================
--- sys/dev/pci/pci_host_generic.c
+++ sys/dev/pci/pci_host_generic.c
@@ -317,7 +317,7 @@
 	rm = generic_pcie_rman(sc, type, rman_get_flags(res));
 	if (rm != NULL) {
 		KASSERT(rman_is_region_manager(res, rm), ("rman mismatch"));
-		rman_release_resource(res);
+		return (rman_release_resource(res));
 	}
 
 	return (bus_generic_release_resource(dev, child, type, rid, res));