Obviously it's all speculation. I don't think a single trip to North Korea will result in serious blowback, other than noise from politicians. If Google ends up doing business with North Korea, it could be a different story. Corporations tend not to view countries through a political prism; instead they see markets. But since the vast majority of North Koreans do not have access to the Internet, there's not much of a market for Google to exploit right now.
Answer
Obviously it's all speculation. I don't think a single trip to North Korea will result in serious blowback, other than noise from politicians. If Google ends up doing business with North Korea, it could be a different story. Corporations tend not to view countries through a political prism; instead they see markets. But since the vast majority of North Koreans do not have access to the Internet, there's not much of a market for Google to exploit right now.