Emor

In Shemos 2,12, Rashi says before Moshe killed the Mitzri he checked with Ruach Hakodesh and saw that none of this Mitzri's descendants will convert. But in Vayikra 24,10 Rashi says the Mekalel was the son of the Mitzri and he converted! How can Rashi say that Moshe saw that none of his kids will convert and then say later that his son did convert?