fs: btrfs: release the path when btrfs_search_slot() fails

The U-Boot copy of btrfs_search_slot() returns on error with the nodes
it has descended through still attached to the path. The kernel one
releases the path on any error unless p->skip_release_on_error is set,
and callers written against that convention treat a failed search as
owning nothing. btrfs_size() is one: it returns straight away on a
search error and never reaches its btrfs_release_path() call, so the
attached extent buffer references leak.

Route both error exits through a release of the path. The error
returns of read_node_slot() carry no extra reference, so the path is
the only thing to clean up.

Suggested-by: Qu Wenruo <[email protected]>
Signed-off-by: Cole Munz <[email protected]>
Reviewed-by: Qu Wenruo <[email protected]>

0 files changed, 0 insertions, 0 deletions