!7138 SUNRPC: fix some memleaks in gssx_dec_option_array

Merge Pull Request from: @ci-robot 
 
PR sync from: Dong Chenchen <dongchenchen2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/W45RJJOMTWO2OAXXWMPXNCBSFBP6PMS6/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9L9J1 
 
Link:https://gitee.com/openeuler/kernel/pulls/7138

 

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