The Nerazzurri were beaten 2-0 at the San Paolo by a Cavani brace.
"We must always look ahead at what comes next and keep on fighting, because we want to win something important," said El Matador.
He broke the deadlock from the penalty spot, just days after seeing his spot-kick saved against Siena.
"What happened is already in the past. The most important thing was to win and we achieved it, so we're all happy."