scsi: qla2xxx: edif: Fix I/O timeout due to over-subscription

scsi: qla2xxx: edif: Fix I/O timeout due to over-subscription

[ Upstream commit 63ab6cb582fad3757a03f466db671729b97f2df8 ]

The current edif code does not keep track of FW IOCB resources.  This led
to IOCB queue full on error recovery (I/O timeout).  Make use of the
existing code that tracks IOCB resources to prevent over-subscription.

Link: https://lore.kernel.org/r/20220608115849.16693-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: 41e5afe51f75 ("scsi: qla2xxx: Fix exchange oversubscription")
Signed-off-by: Sasha Levin <sashal@kernel.org>