Fix goroutine leak in perform

Signed-off-by: willzgli <willzgli@tencent.com>

pkg/kube/client.go

@@ -37,6 +37,7 @@ import (
 	apiextv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 
+	multierror "github.com/hashicorp/go-multierror"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
@@ -532,6 +533,8 @@ func (c *Client) WatchUntilReady(resources ResourceList, timeout time.Duration)
 }
 
 func perform(infos ResourceList, fn func(*resource.Info) error) error {
+	var result error
+
 	if len(infos) == 0 {
 		return ErrNoObjectsVisited
 	}
@@ -542,10 +545,11 @@ func perform(infos ResourceList, fn func(*resource.Info) error) error {
 	for range infos {
 		err := <-errs
 		if err != nil {
-			return err
+			result = multierror.Append(result, err)
 		}
 	}
-	return nil
+
+	return result
 }
 
 // getManagedFieldsManager returns the manager string. If one was set it will be returned.