Madara can only stay seperate from his limbo clone for a certain amount of time. Now the limbo clone is sealed, and madara is in another dimention. What happens when time is up?
It is unknown. Theoretically the limbo clone should return to madara and spread Shukaku's seal to his real body. But I doubt that will happen because Madara is a walking plot hole.
The body in the Limbo world goes back to the original body (which it did). Madara substituted himself with it when Naruto and Sasuke attacked him though. So, I don't think he'll have Limbo to use now.