xfs: fix incorrect error-out in xfs_remove

mainline inclusion
from mainline-v6.1-rc4
commit 2653d533
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4KIAO
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2653d53345bda90604f673bb211dd060a5a5c232



--------------------------------

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: Guo Xuenan <guoxuenan@huawei.com>
Signed-off-by: Long Li <leo.lilong@huawei.com>