NVMe: End sync requests immediately on failure

Do not retry failed sync commands so the original status may be seen
without issuing unnecessary retries.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 4eb9917..6ed1356 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -1010,6 +1010,7 @@
 		return PTR_ERR(req);
 
 	req->cmd_type = REQ_TYPE_DRV_PRIV;
+	req->cmd_flags = REQ_FAILFAST_DRIVER;
 	req->__data_len = 0;
 	req->__sector = (sector_t) -1;
 	req->bio = req->biotail = NULL;