scsi: qla2xxx: Fix abort timeout race condition.

[ Upstream commit 0c6df590 ]

If an abort times out, the Abort IOCB completion and Abort timer can race
against each other. This patch provides unique error code for timer path to
allow proper cleanup.

[mkp: typo]

Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>