Sounds extremely unlikely to me.
1. The Olympic committee isn’t really in the business of bargaining for nuclear disarmament.
2. The Olympic committee in recent decades has wanted a huge modern spectacle with many thousands of foreign visitors and corporate media and so on, none of which fits North Korea in any way
3. North Korea doesn’t seem like it would particularly want to host the Olympic games, certainly not as an exchange for its nuclear weapons program. That sounds like one of the least likely deals I can imagine.
4. North Korea would much more enjoy lifting of various sanctions and provision of resources and so on, but is not abandoning its nuclear weapons program to try to get those.