ingester: fix lint issues for chunk transfers

pkg/ingester/transfer.go

@@ -165,10 +165,8 @@ func (i *Ingester) transferOut(ctx context.Context) error {
 
 	ctx = user.InjectOrgID(ctx, "-1")
 	stream, err := ic.TransferChunks(ctx)
-
-	_, err = stream.CloseAndRecv()
 	if err != nil {
-		return errors.Wrap(err, "CloseAndRecv")
+		return errors.Wrap(err, "TransferChunks")
 	}
 
 	for instanceID, inst := range i.instances {
@@ -191,17 +189,26 @@ func (i *Ingester) transferOut(ctx context.Context) error {
 				lbls = append(lbls, &logproto.LabelPair{Name: lbl.Name, Value: lbl.Value})
 			}
 
-			stream.Send(&logproto.TimeSeriesChunk{
+			err := stream.Send(&logproto.TimeSeriesChunk{
 				Chunks:         chunks,
 				UserId:         instanceID,
 				Labels:         lbls,
 				FromIngesterId: i.lifecycler.ID,
 			})
+			if err != nil {
+				level.Error(util.Logger).Log("msg", "failed sending stream's chunks to ingester", "to_ingester", targetIngester.Addr, "err", err)
+				return err
+			}
 
 			sentChunks.Add(float64(len(chunks)))
 		}
 	}
 
+	_, err = stream.CloseAndRecv()
+	if err != nil {
+		return errors.Wrap(err, "CloseAndRecv")
+	}
+
 	for _, flushQueue := range i.flushQueues {
 		flushQueue.DiscardAndClose()
 	}