Previously, if nvme_allocate_request() failed in
nvme_ctrlr_construct_and_submit_aer(), there was no error checking, so a
NULL pointer would be dereferenced.
Add a return value to nvme_ctrlr_construct_and_submit_aer() so we can
signal failure to the caller. This can only really be reasonably
handled during initialization; when resubmitting a completed AER later,
there is nowhere to report failure, so the AER will just remain
unsubmitted.
Change-Id: I413eb6c21be01cd9a61e67f62f2d0b7170eabaa3
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
b96536e74a