Btrfs: remove unused tmp_path from iterate_dir_item

A leftover from older code and unused now.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>

fs/btrfs/send.c

@@ -864,7 +864,6 @@ static int iterate_dir_item(struct send_ctx *sctx,
 	struct extent_buffer *eb;
 	struct btrfs_item *item;
 	struct btrfs_dir_item *di;
-	struct btrfs_path *tmp_path = NULL;
 	struct btrfs_key di_key;
 	char *buf = NULL;
 	char *buf2 = NULL;
@@ -886,12 +885,6 @@ static int iterate_dir_item(struct send_ctx *sctx,
 		goto out;
 	}
 
-	tmp_path = alloc_path_for_send();
-	if (!tmp_path) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
 	eb = path->nodes[0];
 	slot = path->slots[0];
 	item = btrfs_item_nr(eb, slot);
@@ -953,7 +946,6 @@ static int iterate_dir_item(struct send_ctx *sctx,
 	}
 
 out:
-	btrfs_free_path(tmp_path);
 	if (buf_virtual)
 		vfree(buf);
 	else