Liverpool’s Mohamed Salah in action. — AFP/FilePARIS: Mohamed Salah helped maintain Liverpool’s perfect record in the Champions League on Tuesday while holders Real Madrid bounced back from their defeat at Anfield to topple in-form Italians Atalanta.Elsewhere, struggling Paris Saint-Germain gained a vital win at Salzburg, while Bayer Leverkusen edged Inter Milan to move second. Aston Villa, in their first appearance in the continent’s elite club competition for 41 years, maintained...