kmemleak reported that we don't free the parent pointer names here if we
found corruption.
Fixes: 0d29a20fbdba8 ("xfs: scrub parent pointers") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>