kernel: drm/vkms: Fix memory leak in vkms_init()

In the Linux kernel, the following vulnerability has been resolved: drm/vkms: Fix memory leak in vkmsinit A memory leak was reported after the vkms module install failed. unreferenced object 0xffff88810bc28520 size 16: comm "modprobe", pid 9662, jiffies 4298009455 age 42.590s hex dump first 16...