ksmbd: Fix buffer_check_err() kernel-doc comment

Add the description of @rsp_org in buffer_check_err() kernel-doc comment
to remove a warning found by running scripts/kernel-doc, which is caused
by using 'make W=1'.
fs/ksmbd/smb2pdu.c:4028: warning: Function parameter or member 'rsp_org'
not described in 'buffer_check_err'
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Fixes: cb451720 ("ksmbd: remove smb2_buf_length in smb2_hdr")
Acked-by: NNamjae Jeon <linkinjeon@kernel.org>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>

fs/ksmbd/smb2pdu.c

@@ -4018,6 +4018,7 @@ int smb2_query_dir(struct ksmbd_work *work)
  * buffer_check_err() - helper function to check buffer errors
  * @reqOutputBufferLength:	max buffer length expected in command response
  * @rsp:		query info response buffer contains output buffer length
+ * @rsp_org:		base response buffer pointer in case of chained response
  * @infoclass_size:	query info class response buffer size
  *
  * Return:	0 on success, otherwise error