code collation

[lucming]

…les in the preemption plugin

Ⅰ. Describe what this PR does

1. optimise the handling of error
2. optimise the initialisation logic of variables in the preemption plugin

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 68.81% // Head: 68.89% // Increases project coverage by +0.07% 🎉

Coverage data is based on head (c9a5a79) compared to base (62f57b6).
Patch coverage: 47.82% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #651      +/-   ##
==========================================
+ Coverage   68.81%   68.89%   +0.07%     
==========================================
  Files         196      203       +7     
  Lines       22322    22900     +578     
==========================================
+ Hits        15360    15776     +416     
- Misses       5886     6029     +143     
- Partials     1076     1095      +19     

Flag	Coverage Δ
unittests	68.89% <47.82%> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...cheduler/plugins/reservation/garbage_collection.go	82.01% <47.05%> (-0.13%)	⬇️
.../plugins/compatibledefaultpreemption/preemption.go	85.36% <50.00%> (+4.93%)	⬆️
pkg/webhook/pod/validating/validating_handler.go	84.74% <0.00%> (-5.26%)	⬇️
pkg/util/resource.go	45.45% <0.00%> (-4.55%)	⬇️
...r/plugins/elasticquota/core/group_quota_manager.go	84.33% <0.00%> (-2.30%)	⬇️
pkg/koordlet/resmanager/memory_evict.go	69.82% <0.00%> (-2.25%)	⬇️
pkg/koordlet/statesinformer/states_device_linux.go	42.40% <0.00%> (-0.68%)	⬇️
...kg/scheduler/plugins/elasticquota/plugin_helper.go	79.34% <0.00%> (-0.44%)	⬇️
pkg/slo-controller/nodeslo/resource_strategy.go	84.61% <0.00%> (-0.14%)	⬇️
... and 14 more

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[jasonliu747]

/lgtm

[eahydra]

/lgtm
/approve

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: eahydra, hormes

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