scsi: qla2xxx: Fix a memory leak in an error path of qla2x00_process_els()

stable inclusion
from stable-v5.10.76
commit 96f0aebf29be25254fa585af43924e34aa21fd9a
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9RB0N
CVE: CVE-2021-47473

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=96f0aebf29be25254fa585af43924e34aa21fd9a

---------------------------

[ Upstream commit 7fb223d0 ]

Commit 8c0eb596 ("[SCSI] qla2xxx: Fix a memory leak in an error path of
qla2x00_process_els()"), intended to change:

        bsg_job->request->msgcode == FC_BSG_HST_ELS_NOLOGIN

to:

        bsg_job->request->msgcode != FC_BSG_RPT_ELS

but changed it to:

        bsg_job->request->msgcode == FC_BSG_RPT_ELS

instead.

Change the == to a != to avoid leaking the fcport structure or freeing
unallocated memory.

Link: https://lore.kernel.org/r/20211012191834.90306-2-jgu@purestorage.com


Fixes: 8c0eb596 ("[SCSI] qla2xxx: Fix a memory leak in an error path of qla2x00_process_els()")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Joy Gu <jgu@purestorage.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Conflicts:
	drivers/scsi/qla2xxx/qla_bsg.c
[Some prev patch is not merged, but is not relevant to the bugfix]
Signed-off-by: Hui Tang <tanghui20@huawei.com>