!9061 iio: mma8452: Fix trigger reference couting

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhang Changzhong <zhangchangzhong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/IHL3JPGVL74SYQUWJYHHHSF2G2POHRAF/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9S271 
 
Link:https://gitee.com/openeuler/kernel/pulls/9061

 

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