cmd/gitops-pusher: fix minor bug with ACL tests (#5123)

Signed-off-by: Xe <xe@tailscale.com>

cmd/gitops-pusher/gitops-pusher.go

@@ -237,12 +237,6 @@ func testNewACLs(ctx context.Context, tailnet, apiKey, policyFname string) error
 	}
 	defer resp.Body.Close()
 
-	got := resp.StatusCode
-	want := http.StatusOK
-	if got != want {
-		return fmt.Errorf("wanted HTTP status code %d but got %d", want, got)
-	}
-
 	var ate ACLTestError
 	err = json.NewDecoder(resp.Body).Decode(&ate)
 	if err != nil {
@@ -253,6 +247,12 @@ func testNewACLs(ctx context.Context, tailnet, apiKey, policyFname string) error
 		return ate
 	}
 
+	got := resp.StatusCode
+	want := http.StatusOK
+	if got != want {
+		return fmt.Errorf("wanted HTTP status code %d but got %d", want, got)
+	}
+
 	return nil
 }