Bank of America, in an effort to cut its losses from its 2008 acquisition of Countrywide Financial Corp., is looking to unload its correspondent mortgage business, and is said to be in talks with Nationstar Mortgage Holdings Inc., a unit of private-equity firm Fortress Investment Group. BofA has taken a deep look at its operations in the context of today's marketplace and decided to make some major strategic adjustments, including dumping the correspondent business…