Jon Bon Jovi wants out of the posh but perhaps cursed prewar building on Mercer Street where Mark Madoff committed suicide last December. Bon Jovi is quietly shopping around his SoHo duplex condo with a chart-topping asking price of about $45 million, reports The Post’s Andy Wang. The rocker bought the six-bedroom, 6 1/2-bathroom, 7,400-square-foot residence with three terraces, arched windows and 12-foot ceilings for $24 million in 2007. Sources say he’s completed a spectacular, multimillion-dollar renovation. We’re told that while Bon Jovi likes the neighborhood and has been seen at spots including Imperial No. 9 and Burger & Barrel, he’s ready to move on.