hyperv: Fix Coverity issues in the Hyper-V driver

[dab]

Summary

Coverity reports the use of two uninitialized variables in the hyperv
driver. Examination shows the variables can be accessed while
uninitialized in error cases. Fix both.

CID: 1365235
CID: 1365236
Obtained from: Robert Herndon <[e-mail]>
Sponsored by: Dell Technologies
MFC after: 1w

Test Plan

Changes in use at $WORK

[dab]

Re-submit

[bret_ketchum_dell.com]

LGTM

[vangyzen]

Common practice for attributing the submitter with git is:

git commit --amend --author='Robert Herndon <[e-mail]>'

[dab]

In D38551#877968, @vangyzen wrote:

Common practice for attributing the submitter with git is:

git commit --amend --author='Robert Herndon <[e-mail]>'

Ah, good to know. I actually used git am to apply the patch and it annotated the commit that way. I "fixed" it to list me. I'll change it back and remember this for the future.

Does that then take the place of "Obtained from" and/or "Submitted by"?

[robert.herndon_dell.com]

Re-trying to approve this change. (Please ignore if redundant.)

[dab]

Correct author in commit log.