Remember that Russia installed Yanukovych in Ukraine, poisoning his opponent, Yushchenko to do it. When Yushchenko didn't die, and Yanukovych won, Ukraine halted the country with protest and international observers came in and re-ran the election and Yushchenko won.
So what happened to Putin's puppet, Yanukovych? He fucking won the next election five years later. Then Ukraine spent most of his next term trying to oust him AGAIN, and when they finally did, Russia annexed Crimea using the turmoil as cover.
So no, if Trump is proven to be compromised Russia won't burn him, they'll protect him and support him like Yanukovych.