Reporting Mortgage Interest on a property that was primary residence for 3 months, then converted to rental property

I lived in residence from Jan 2016 to March 2016, then converted to rental property from April 2016 to Dec 2016. Do I report 9 months worth of mortgage interest in the 'Rental Income' section, and 3 months of mortgage interest in the 'Deductions/Credits', or all 12 months in the 'Rental Income' section? or all 12 months in the 'Deduction/Credits' section?  I believe I can't duplicate in both sections correct?