I figured out how to input this in TurboTax. In order to do so, on the "Describe the Partnership" screen, you must check: "I am required to pay supplemental business expenses on behalf of this partnership/LLC for which I am not reimbursed."
On the next screen, you click "Yes" to the question requiring you to pay expenses out of pocket.
After a few screens, there will be an option to input "Interest Expense to Finance Purchase of Partnership Interest."
This will correctly deduct/offset the partnership income in the generated forms.
