!1712 xfrm: add NULL check in xfrm_update_ae_params

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/7PFY2LM6OIUSJFT2K5UQ5LIDQ4XPI6T6/ 
 
https://gitee.com/src-openeuler/kernel/issues/I7NYWN 
 
Link:https://gitee.com/openeuler/kernel/pulls/1712

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Liu YongQiang <liuyongqiang13@huawei.com>