IB/srp: Let srp_abort() return FAST_IO_FAIL if TL offline

If the transport layer is offline it is more appropriate to let
srp_abort() return FAST_IO_FAIL instead of SUCCESS.
Reported-by: Sebastian Riemer <sebastian.riemer@profitbricks.com>
Acked-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>

drivers/infiniband/ulp/srp/ib_srp.c

@@ -1753,8 +1753,7 @@ static int srp_abort(struct scsi_cmnd *scmnd)
 	if (!req || !srp_claim_req(target, req, scmnd))
 		return FAILED;
 	if (srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
-			      SRP_TSK_ABORT_TASK) == 0 ||
-	    target->transport_offline)
+			      SRP_TSK_ABORT_TASK) == 0)
 		ret = SUCCESS;
 	else if (target->transport_offline)
 		ret = FAST_IO_FAIL;