fix flaky TestMultipleDealsConcurrent (#873)

storagemarket/provider_test.go

@@ -1949,20 +1949,24 @@ func (td *testDeal) executeAndSubscribeImportOfflineDeal() error {
 }
 
 func (td *testDeal) executeAndSubscribe() error {
-	pi, err := td.ph.Provider.ExecuteDeal(context.Background(), td.params, "")
+	dh, err := td.ph.Provider.mkAndInsertDealHandler(td.params.DealUUID)
 	if err != nil {
 		return err
 	}
-	if !pi.Accepted {
-		return fmt.Errorf("deal not accepted: %s", pi.Reason)
-	}
-	dh := td.ph.Provider.getDealHandler(td.params.DealUUID)
 	sub, err := dh.subscribeUpdates()
 	if err != nil {
 		return err
 	}
 	td.sub = sub
 
+	pi, err := td.ph.Provider.ExecuteDeal(context.Background(), td.params, "")
+	if err != nil {
+		return err
+	}
+	if !pi.Accepted {
+		return fmt.Errorf("deal not accepted: %s", pi.Reason)
+	}
+
 	return nil
 }