Exit scheduler retry loop correctly

The error was being eaten and shadowed, which means we would never exit
this loop. This might lead to a goroutine in the scheduler being used
forever without exiting at maximum backoff.

Switched to use the real client to make later refactors easier.

plugin/pkg/scheduler/factory/factory.go

@@ -532,10 +532,13 @@ func (factory *ConfigFactory) makeDefaultErrorFunc(backoff *podBackoff, podQueue
 				return
 			}
 			// Get the pod again; it may have changed/been scheduled already.
-			pod = &api.Pod{}
 			getBackoff := initialGetBackoff
 			for {
-				if err := factory.Client.Get().Namespace(podID.Namespace).Resource("pods").Name(podID.Name).Do().Into(pod); err == nil {
+				pod, err := factory.Client.Pods(podID.Namespace).Get(podID.Name)
+				if err == nil {
+					if len(pod.Spec.NodeName) == 0 {
+						podQueue.AddIfNotPresent(pod)
+					}
 					break
 				}
 				if errors.IsNotFound(err) {
@@ -548,9 +551,6 @@ func (factory *ConfigFactory) makeDefaultErrorFunc(backoff *podBackoff, podQueue
 				}
 				time.Sleep(getBackoff)
 			}
-			if pod.Spec.NodeName == "" {
-				podQueue.AddIfNotPresent(pod)
-			}
 		}()
 	}
 }