!5062 team: fix null-ptr-deref when team device type is changed

Merge Pull Request from: @ci-robot 
 
PR sync from: Ziyang Xuan <william.xuanziyang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/4XZVYTE3JFF5YGUNOZC5HAQ7VUR25N4E/ 
 
https://gitee.com/src-openeuler/kernel/issues/I95ATZ 
 
Link:https://gitee.com/openeuler/kernel/pulls/5062

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>