CVE-2025-39772 drm/hisilicon/hibmc: fix the hibmc loaded failed bug

In the Linux kernel, the following vulnerability has been resolved: drm/hisilicon/hibmc: fix the hibmc loaded failed bug When hibmc loaded failed, the driver use hibmcunload to free the resource, but the mutexes in mode.config are not init, which will access an NULL pointer. Just change goto...