fix some missing errors return statements

Signed-off-by: haoshuwei <haoshuwei24@gmail.com>

Kubernetes-commit: c4fe8f11b200d0a97e8ce447e5af592b5c4870d0

pkg/cmd/apply/apply.go

@@ -250,6 +250,9 @@ func (o *ApplyOptions) Complete(f cmdutil.Factory, cmd *cobra.Command) error {
 
 	o.OpenAPISchema, _ = f.OpenAPISchema()
 	o.Validator, err = f.Validator(cmdutil.GetFlagBool(cmd, "validate"))
+	if err != nil {
+		return err
+	}
 	o.Builder = f.NewBuilder()
 	o.Mapper, err = f.ToRESTMapper()
 	if err != nil {

pkg/cmd/label/label.go

@@ -181,6 +181,9 @@ func (o *LabelOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args []st
 	}
 	o.resources = resources
 	o.newLabels, o.removeLabels, err = parseLabels(labelArgs)
+	if err != nil {
+		return err
+	}
 
 	if o.list && len(o.outputFormat) > 0 {
 		return fmt.Errorf("--list and --output may not be specified together")