drm/meson: fix shutdown crash when component not probed
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.124 by commit 4ce2bf20b4a6e307e114847d60b2bf40a6a1fac0, it was introduced in version v5.4.106 by commit d2100ef32a8cfd024bad94f4fbc5e53d40d2b3da. For more details please see the references link.