Optimize the control structure

[zm50]

🔍 What type of PR is this?

/kind cleanup

👀 What this PR does / why we need it:

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

This PR improves some of the details of the code.

🅰 Which issue(s) this PR fixes:

clean up the code

Fixes #

📝 Special notes for your reviewer:

I suggest reading the corresponding code for better understanding.

🎯 Describe how to verify it

Local verification by fetching my PR through gh or git.
Verification through CICD.
Local verification by running make start.

There are several methods to verify the health of this PR:

[kubbot]

CLA Assistant Lite bot 🤖 All Contributors have signed the open-im-server CLA.
The signed information is recorded 🤖here

[sweep-ai]

Apply Sweep Rules to your PR?

• Apply: Leftover TODOs in the code should be handled.
• Apply: All new business logic should have corresponding unit tests in the tests/ directory.
• Apply: Any clearly inefficient or repeated code should be optimized or refactored.

[codecov]

Codecov Report

Merging #1294 (070ba08) into main (a4b28c9) will not change coverage.
The diff coverage is n/a.

❗ Current head 070ba08 differs from pull request most recent head ad14bd1. Consider uploading reports for the commit ad14bd1 to get more accurate results

@@          Coverage Diff          @@
##            main   #1294   +/-   ##
=====================================
  Coverage   2.44%   2.44%           
=====================================
  Files         13      13           
  Lines        778     778           
=====================================
  Hits          19      19           
  Misses       756     756           
  Partials       3       3           

Files	Coverage Δ
pkg/common/db/relation/mysql_init.go	20.87% <ø> (ø)

[cubxxw]

hi @go75 ,

I would like to kindly request your assistance with two tasks related to our project. Firstly, I would greatly appreciate it if you could sign the Contributor License Agreement (CLA) to ensure that we can use your contributions to the project. Secondly, I would be grateful if you could take a moment to review and address any errors in the Golang lint. Your expertise in this area would be invaluable to the success of our project.

Thank you very much for your time and consideration. Please let me know if you have any questions or concerns.

[zm50]

I have read the CLA Document and I hereby sign the CLA

[zm50]

I have read the CLA Document and I hereby sign the CLA