Fix inconsistent logging in registerReference.

Test: pass
Bug: 36505128
Change-Id: I365a2071a18789b0bce31a3f4e0dde3128dcc3e8
diff --git a/transport/ServiceManagement.cpp b/transport/ServiceManagement.cpp
index d425591..cc31d9e 100644
--- a/transport/ServiceManagement.cpp
+++ b/transport/ServiceManagement.cpp
@@ -123,6 +123,7 @@
         LOG(WARNING) << "Could not registerReference for "
                      << interfaceName << "/" << instanceName
                      << ": " << ret.description();
+        return;
     }
     LOG(VERBOSE) << "Successfully registerReference for "
                  << interfaceName << "/" << instanceName;