opened
zhangxiaoyu-zidif
username_0
<!--  Thanks for sending a pull request!  Here are some tips for you:
1. If this is your first time, read our contributor guidelines https://github.com/kubernetes/community/blob/master/contributors/devel/pull-requests.md#the-pr-submit-process and developer guide https://github.com/kubernetes/community/blob/master/contributors/devel/development.md#development-guide
2. If you want *faster* PR reviews, read how: https://github.com/kubernetes/community/blob/master/contributors/devel/pull-requests.md#best-practices-for-faster-reviews
3. Follow the instructions for writing a release note: https://github.com/kubernetes/community/blob/master/contributors/devel/pull-requests.md#write-release-notes-if-needed
-->

**What this PR does / why we need it**:
Return nil directly when err is nil

**Special notes for your reviewer**:

**Release note**:
<!--  Steps to write your release note:
1. Use the release-note-* labels to set the release note state (if you have access)
2. Enter your extended release note in the below block; leaving it blank means using the PR title as the release note. If no release note is required, just write `NONE`.
-->
```release-note
NONE
```
Return nil when err is nil
issue
created
cblecker
username_1
This is effectively a noop. Why is this needed?
comment
created
zhangxiaoyu-zidif
username_0
@username_1  Sir， please refer to https://github.com/kubernetes/kubernetes/pull/29866, https://github.com/kubernetes/kubernetes/pull/45162. That may be a format. Thanks.
comment
created
cblecker
username_1
@k8s-bot ok to test
comment
created
cblecker
username_1
/lgtm
comment
created
wojtek-t
username_2
/approve
comment