Easy TP to Prime Enchanter Boss

I like farming the bosses for certain unique drops I have just one issue with the Prime Enchanter boss. Whenever I defeat him, I have no way of going back to the respawn quest without doing the entire dungeon section all over again. You have an easy way to get to the boss platform, but there isn't a way to get back to respawn him. Of course I could be wrong and there might be a way that I just don't know of but, if there isn't I would like a way to get back to the respawn boss quest a lot easier.