ksmbd: fix missing use of get_write in in smb2_set_ea()

ksmbd: fix missing use of get_write in in smb2_set_ea()

BugLink: https://bugs.launchpad.net/bugs/2074091
commit 2bfc4214c69c62da13a9da8e3c3db5539da2ccd3 upstream.

Fix an issue where get_write is not used in smb2_set_ea().

Fixes: 6fc0a265e1b9 ("ksmbd: fix potential circular locking issue in smb2_set_ea()")
Cc: stable@vger.kernel.org
Reported-by: Wang Zhaolong <wangzhaolong1@huawei.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>