firmware: raspberrypi: fix possible memory leak in rpifirmwareprobe()
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 v5.15.86 by commit b308fdedef095aac14569f810d46edf773ea7d1e, it was introduced in version v5.13 by commit 1e7c57355a3bc617fc220234889e49fe722a6305. For more details please see the references link.