nvme-tcp: fail command with NVME_SC_HOST_PATH_ERROR send failed

This is a more appropriate error status for a transport error
detected by us (the host).
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>

drivers/nvme/host/tcp.c

@@ -842,7 +842,7 @@ static inline void nvme_tcp_done_send_req(struct nvme_tcp_queue *queue)
 
 static void nvme_tcp_fail_request(struct nvme_tcp_request *req)
 {
-	nvme_tcp_end_request(blk_mq_rq_from_pdu(req), NVME_SC_DATA_XFER_ERROR);
+	nvme_tcp_end_request(blk_mq_rq_from_pdu(req), NVME_SC_HOST_PATH_ERROR);
 }
 
 static int nvme_tcp_try_send_data(struct nvme_tcp_request *req)