Select saute function on instant pot and set to normal. Add butter and oil; stir until butter melts, about 2 minutes. Add mushrooms; cook, stirring occasionally m until slightly softened, about 3 minutes. Stir in onion and cook 2 minutes. Add rosemary and cook 1 minute more. Stir in the rice until the grains are coated. Stir in broth, wine, and S&P.