!1404 bpf: cpumap: Fix memory leak in cpu_map_update_elem

Merge Pull Request from: @ci-robot 
 
PR sync from: Pu Lehui <pulehui@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/HKR5D65AUBUR6PQA2JDXV2YLD275ND24/ 
 
https://gitee.com/openeuler/kernel/issues/I7KN6F 
 
Link:https://gitee.com/openeuler/kernel/pulls/1404

 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>