btrfs: extent-tree: cleanup one-shot usage of @blocksize in do_walk_down

@blocksize variable in do_walk_down() is only used once, really no need to declare it.

Signed-off-by Qu Wenruo <[email protected]>

---
 fs/btrfs/extent-tree.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

fs/btrfs/extent-tree.c +1 -3

index 225698b588c4..6744f2fa2b03 100644
@@ -8577,7 +8577,6 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
 	u64 bytenr;
 	u64 generation;
 	u64 parent;
-	u32 blocksize;
 	struct btrfs_key key;
 	struct btrfs_key first_key;
 	struct extent_buffer *next;

@@ -8602,7 +8601,6 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
 	bytenr = btrfs_node_blockptr(path->nodes[level], path->slots[level]);
 	btrfs_node_key_to_cpu(path->nodes[level], &first_key,
 			      path->slots[level]);
-	blocksize = fs_info->nodesize;
 
 	next = find_extent_buffer(fs_info, bytenr);
 	if (!next) {

@@ -8726,7 +8724,7 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
 					     ret);
 			}
 		}
-		ret = btrfs_free_extent(trans, root, bytenr, blocksize,
+		ret = btrfs_free_extent(trans, root, bytenr, fs_info->nodesize,
 					parent, root->root_key.objectid,
 					level - 1, 0, false);
 		if (ret)

@blocksize variable in do_walk_down() is only used once, really no need to declare it.

Signed-off-by Qu Wenruo <[email protected]>