To answer the question, NO. You received the money in 2015 and paid taxes on that money in 2015. What happnened to the money after that has absolutely no effect what-so-ever in any way, form or fashion on your 2015 return.
If you paid it back in a later year, then you will report the payback on the tax return for the tax year you actually paid it back. Your 2015 tax return remains unchanged.
