remove duplicated nil check
diff --git a/app/dubboctl/cmd/build.go b/app/dubboctl/cmd/build.go
index 68d9d82..44d9cb0 100644
--- a/app/dubboctl/cmd/build.go
+++ b/app/dubboctl/cmd/build.go
@@ -79,9 +79,6 @@
 	if err != nil {
 		return err
 	}
-	if err != nil {
-		return err
-	}
 	if !f.Initialized() {
 		return dubbo.NewErrNotInitialized(f.Root)
 	}