efi: fix NULL-deref in init error path
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 v5.4.229 by commit 5fcf75a8a4c3e7ee9122d143684083c9faf20452, it was introduced in version v5.4.61 by commit 5167f194da6947e19a3e970485ee3ccb44f7958d. For more details please see the references link.