VOL-1774 Etcd Crash Handling

Change-Id: I1eeb726654c3972fd0a4fafae134607e5a810415
diff --git a/rw_core/core/adapter_request_handler.go b/rw_core/core/adapter_request_handler.go
index 8f43643..0ffe8e1 100644
--- a/rw_core/core/adapter_request_handler.go
+++ b/rw_core/core/adapter_request_handler.go
@@ -150,7 +150,7 @@
 	if rhp.TestMode { // Execute only for test cases
 		return &voltha.CoreInstance{InstanceId: "CoreInstance"}, nil
 	}
-	return rhp.adapterMgr.registerAdapter(adapter, deviceTypes), nil
+	return rhp.adapterMgr.registerAdapter(adapter, deviceTypes)
 }
 
 // GetDevice returns device info