nvme: don't overwrite req->cmd_flags on sync cmd

nvme: don't overwrite req->cmd_flags on sync cmd

In __nvme_submit_sync_cmd, the request direction is overwritten when
the REQ_FAILFAST_DRIVER flag is set.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixes: 75619bfa904d0 ("NVMe: End sync requests immediately on failure")
Signed-off-by: Jens Axboe <axboe@fb.com>
  Orabug: 24561038
  Mainline Commit: e112af0dc9f55099b948e55077504a44b4162c79

Signed-off-by: Ashok Vairavan <ashok.vairavan@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>