!8923 i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

Merge Pull Request from: @ci-robot 
 
PR sync from: Li Huafei <lihuafei1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/VN22HQ4G7TB67A7GXMZ7HZ6BY4PY2UOU/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9S22G 
 
Link:https://gitee.com/openeuler/kernel/pulls/8923

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Ye Weihua <yeweihua4@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>