Fix return bug (#34093)

Fix https://github.com/go-gitea/gitea/pull/34031/files#r2021927997

routers/api/v1/repo/transfer.go

@@ -119,8 +119,8 @@ func Transfer(ctx *context.APIContext) {
 			ctx.APIError(http.StatusForbidden, err)
 		default:
 			ctx.APIErrorInternal(err)
-			return
 		}
+		return
 	}
 
 	if ctx.Repo.Repository.Status == repo_model.RepositoryPendingTransfer {