isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock.

Since there is a possibilty of a timeout waiting for the RNC suspension,
handle the exit case from the task termination under scic_lock, and leave
the tag allocated if the termination timed-out.
Signed-off-by: NJeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

drivers/scsi/isci/remote_device.c

@@ -243,8 +243,11 @@ enum sci_status isci_remote_device_terminate_requests(
 					 idev->rnc.destination_state,
 					 ireq, ireq->flags);
 			}
+			spin_lock_irqsave(&ihost->scic_lock, flags);
 			clear_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags);
-			isci_free_tag(ihost, ireq->io_tag);
+			if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags))
+				isci_free_tag(ihost, ireq->io_tag);
+			spin_unlock_irqrestore(&ihost->scic_lock, flags);
 		} else {
 			/* Terminate all TCs. */
 			sci_remote_device_terminate_requests(idev);