By Jelani Scott Less than a day after losing Kyrie Irving to a foot injury, the Mavericks received some encouraging updates on the star guard’s health following his exit against the Trail Blazers. Dallas learned Saturday that Irving, who left Friday’s win over Portland in the second quarter, avoided a serious injury after suffering what’s been described as “just a bruise,” according to ESPN’s Tim MacMahon. Irving’s injury was also later detailed in a report by The Athletic’s Shams Charania as a “heel contusion” that the 31-year-old will soon begin treatment to address. The concern surrounding …