nvme/multipath: Use blk_path_error

Uses common code for determining if an error should be retried on
alternate path.

Acked-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/nvme/host/multipath.c

@@ -37,19 +37,7 @@ bool nvme_req_needs_failover(struct request *req, blk_status_t error)
 {
 	if (!(req->cmd_flags & REQ_NVME_MPATH))
 		return false;
-
-	switch (error) {
-	case BLK_STS_NOTSUPP:
-	case BLK_STS_NOSPC:
-	case BLK_STS_TARGET:
-	case BLK_STS_NEXUS:
-	case BLK_STS_MEDIUM:
-	case BLK_STS_PROTECTION:
-		return false;
-	}
-
-	/* Everything else could be a path failure, so should be retried */
-	return true;
+	return blk_path_error(error);
 }
 
 void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl)