firmware: sysfb: fix platform-device leak in 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 v5.15.33 by commit b3e38f939ab4d0d86f56bff3362c3f88c4b2ad32, it was introduced in version v5.15.17 by commit 71db96193317626954073c24344d5cf4759e0af3. For more details please see the references link.