CVE-2024-26941 drm/dp: Fix divide-by-zero regression on DP MST unplug with nouveau

In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix divide-by-zero regression on DP MST unplug with nouveau Fix a regression when using nouveau and unplugging a StarTech MSTDP122DP DisplayPort 1.2 MST hub the same regression does not appear when using a Cable Matters...