Fix warnings and errors in go report card for ovn kubernetes

[tssurya]

What happened?

See https://goreportcard.com/report/github.com/ovn-org/ovn-kubernetes this report for details

What did you expect to happen?

Score for gocyclo and gofmt must be 100%

How can we reproduce it (as minimally and precisely as possible)?

I think running gocyclo and gofmt should be flagging these but apparently the gofmt we run in our CLI doesn't complain of the warnings. Need to look into why that's the case

Anything else we need to know?

No response

OVN Kubernetes version

$ ovnkube --version
Version: 0.3.0
Git commit: f5d4dfb6acef57d9a4cad95fedd672dfe4112f9a
Git branch: master
Go version: go1.21.4
Build date: 2024-05-15
OS/Arch: linux amd64

Kubernetes version

$ kubectl version
Client Version: v1.28.0
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3

OVN version

$ oc rsh -n ovn-kubernetes ovnkube-node-xxxxx (pick any ovnkube-node pod on your cluster)
$ rpm -q ovn
# paste output here

OVS version

$ oc rsh -n ovn-kubernetes ovs-node-xxxxx (pick any ovs pod on your cluster)
$ rpm -q openvswitch
# paste output here

Platform

KIND cluster

OS version

# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here

Install tools

Container runtime (CRI) and version (if applicable)