scsi: qla2xxx: Return -ENOMEM if kzalloc() fails

scsi: qla2xxx: Return -ENOMEM if kzalloc() fails

[ Upstream commit 06634d5b6e923ed0d4772aba8def5a618f44c7fe ]

The driver probing function should return < 0 for failure, otherwise
kernel will treat value > 0 as success.

Link: https://lore.kernel.org/r/1634522181-31166-1-git-send-email-zheyuma97@gmail.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>