Query regarding port of entry wth swiss work permt (Zurich)

I am from India and I hold a valid work permit in Zurich Switzerland. I have a doubt regarding the port of entry. I want to book my ticket to India during my vacation in December Protected content . Can I travel to India from Frankfurt and returning from India to Frankfurt and come to Zurich by road. Is there any rule that with Swiss work permit I need to have the port of entry in Swiss only or I can land in any EU countries?