!4138 KVM: arm64: arch_timer: init ret for kvm_timer_enable

Merge Pull Request from: @sundongx 
 
KVM: arm64: arch_timer: init ret for kvm_timer_enable
https://gitee.com/openeuler/kernel/issues/I8XA6Z 
 
Link:https://gitee.com/openeuler/kernel/pulls/4138

 

Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>