kernel: drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/disp: fix use-after-free in error handling of nouveauconnectorcreate We can't simply free the connector after calling drmconnectorinit on it. We need to clean up the drm side first. It might not fix all regressions fr...