Only repeat IO if we actually failed performing the operation.

src/Workspaces/Core/Desktop/SymbolSearch/SymbolSearchUpdateEngine.Update.cs

@@ -562,6 +562,7 @@ private async Task RepeatIOAsync(Func<Task> action)
                     try
                     {
                         await action().ConfigureAwait(false);
+                        return;
                     }
                     catch (Exception e)
                     {