smb3: fix caching of ctime on setxattr

stable inclusion
from stable-v6.6.3
commit 318e1c7e61c42a2066f511bf850c943ffb09f73c
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8LBQP

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=318e1c7e61c42a2066f511bf850c943ffb09f73c



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commit 5923d6686a100c2b4cabd4c2ca9d5a12579c7614 upstream.

Fixes xfstest generic/728 which had been failing due to incorrect
ctime after setxattr and removexattr

Update ctime on successful set of xattr

Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>