How do you get out of the cave in Mario and Luigi Bowser's Inside Story?

how to get Mario out of the mansion is to fight kingboo.once you fight kingboo at the end of the game E. gadd will use the ghost machine backwards on the Mario painting to get Mario out of the painting making Mario out of the mansion.at the after the credits you will get a rank of what mansion you will get by the amount of coins you earned.