btrfs: clear dirty status from extent buffer on error at insert_new_root()

commit c0d0134 upstream.

If we failed to insert the tree mod log operation, we are not removing the
dirty status from the allocated and dirtied extent buffer before we free
it. Removing the dirty status is needed for several reasons such as to
adjust the fs_info->dirty_metadata_bytes counter and remove the dirty
status from the respective folios. So add the missing call to
btrfs_clear_buffer_dirty().

Fixes: f61aa7b ("btrfs: do not BUG_ON() on tree mod log failure at insert_new_root()")
CC: stable@vger.kernel.org # 6.6+
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 16c5f89071045c96b51e9e64e5fabf847ea23fb6)

Author: fdmanana

fs/btrfs/ctree.c

@@ -2901,6 +2901,7 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,
 	if (ret < 0) {
 		int ret2;
 
+		btrfs_clear_buffer_dirty(trans, c);
 		ret2 = btrfs_free_tree_block(trans, btrfs_root_id(root), c, 0, 1);
 		if (ret2 < 0)
 			btrfs_abort_transaction(trans, ret2);