nvme: Set integrity flag for user passthrough commands

If the command a separate metadata buffer attached, the request needs
to have the integrity flag set so the driver knows to map it.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/nvme/host/core.c

@@ -764,6 +764,7 @@ static int nvme_submit_user_cmd(struct request_queue *q,
 				ret = PTR_ERR(meta);
 				goto out_unmap;
 			}
+			req->cmd_flags |= REQ_INTEGRITY;
 		}
 	}