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 v4.19.270 by commit 585a0b2b3ae7903c6abee3087d09c69e955a7794, it was introduced in version v4.19.142 by commit 2ff3c97b47521d6700cc6485c7935908dcd2c27c. For more details please see the references link.