message: ctr-remote: fix if-return go linter error
  if-return: redundant if ...; err != nil check, just return error instead
diff: @@ -71,10 +71,7 @@ After pulling an image, it should be ready to use the same reference in a run co
  }
  config.FetchConfig = fc
  - if err := pull(ctx, client, ref, config); err != nil {
  - return err
  - }
  - return nil
  + return pull(ctx, client, ref, config)
  },
  }
  