xfs: fix incorrect error-out in xfs_remove

[ Upstream commit 2653d533 ]

Clean up resources if resetting the dotdot entry doesn't succeed.
Observed through code inspection.

Fixes: 5838d035 ("xfs: reset child dir '..' entry when unlinking child")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Andrey Albershteyn <aalbersh@redhat.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>