Correctly return func error()

Signed-off-by: haanhvu <haanh6594@gmail.com>

cmd/thanos/receive.go

@@ -496,7 +496,7 @@ func setupHashring(g *run.Group,
 			defer close(updates)
 			updates <- ring
 			<-cancel
-			return hashringConfigs, nil
+			return nil
 		}, func(error) {
 			close(cancel)
 		})
@@ -513,7 +513,7 @@ func setupHashring(g *run.Group,
 			select {
 			case h, ok := <-updates:
 				if !ok {
-					return hashringConfigs, nil
+					return nil
 				}
 				webHandler.Hashring(h)
 				// If ingestion is enabled, send a signal to TSDB to flush.
@@ -524,7 +524,7 @@ func setupHashring(g *run.Group,
 					statusProber.Ready()
 				}
 			case <-cancel:
-				return hashringConfigs, nil
+				return nil
 			}
 		}
 	}, func(err error) {