revert changes to node_add

cmd/minikube/cmd/node_add.go

@@ -63,8 +63,7 @@ var nodeAddCmd = &cobra.Command{
 			}
 		}
 
-		err := node.Add(cc, n)
-		if err != nil {
+		if err := node.Add(cc, n); err != nil {
 			_, err := maybeDeleteAndRetry(*cc, n, nil, err)
 			if err != nil {
 				exit.WithError("failed to add node", err)
@@ -72,6 +71,7 @@ var nodeAddCmd = &cobra.Command{
 		}
 
 		// Add CNI config if it's not already there
+		// We need to run kubeadm.init here as well
 		if err := config.MultiNodeCNIConfig(cc); err != nil {
 			exit.WithError("failed to save config", err)
 		}