Fix requeue warning introduced by controller-runtime

[matheuscscp]

controller-runtime prints this info-level warning when a non-nil error is returned alongside a non-zero ctrl.Result:

if !result.IsZero() {
	log.Info("Warning: Reconciler returned both a non-zero result and a non-nil error. The result will always be ignored if the error is non-nil and the non-nil error causes reqeueuing with exponential backoff. For more details, see: https://pkg.go.dev/sigs.k8s.io/controller-runtime/pkg/reconcile#Reconciler")
}

This PR fixes the warning preserving the current behavior (returning the error, which is logged by controller-runtime).

[stefanprodan]

LGTM

Thanks @matheuscscp

[fluxcdbot]

Successfully created backport PR for release/v1.2.x:

• [release/v1.2.x] Fix requeue warning introduced by controller-runtime #1102