CVE-2025-39679 drm/nouveau/nvif: Fix potential memory leak in nvif_vmm_ctor().

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/nvif: Fix potential memory leak in nvifvmmctor. When the nvifvmmtype is invalid, we will return error directly without freeing the args in nvifvmmctor, which leading a memory leak. Fix it by setting the ret -EINVAL an...