LOS ANGELES — Audiences turned out this weekend to see Tom Cruise in his sixth run as Ethan Hunt in Mission: Impossible — Fallout, which easily took the No. 1 spot at the domestic box office. Studios on Sunday estimate that Fallout earned $61.5 million from 4,386 North American theaters. Not accounting for inflation, it’s a best for the series which has grossed over $2.8 billion worldwide and one of Cruise’s biggest too. “Mamma Mia!