!1399 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/NNJDQ7II2434WOXUN5X4T4PCHSROG2K4/ 
 
https://gitee.com/openeuler/kernel/issues/I7KNGM 
 
Link:https://gitee.com/openeuler/kernel/pulls/1399

 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>