scsi: qla2xxx: Fix mailbox direction flags in qla2xxx_get_adapter_id()

The SCM changes set the flags in mcp->out_mb instead of mcp->in_mb so the
data was not actually being read into the mcp->mb[] array from the adapter.

Link: https://lore.kernel.org/r/20211108183012.13895-1-emilne@redhat.com


Fixes: 9f2475fe ("scsi: qla2xxx: SAN congestion management implementation")
Cc: stable@vger.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>