!5645 [sync] PR-5493: arm64/mpam: Fix repeated enabling in mpam_enable()

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/5493 
 
PR sync from: Wei Li <liwei391@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/AUZOZRLPZDAWN2XJ3LRWFRKSAETOFR7U/ 
 
https://gitee.com/openeuler/kernel/issues/I9AZFU 
 
Link:https://gitee.com/openeuler/kernel/pulls/5645

 

Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>