powerpc: 8xx: fix a return value error in mpc8xxpicinit
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 v5.4.189 by commit 6f259b1a4ab04261d9a471c9cc9ab8cd8d53007f, it was introduced in version v5.2 by commit cc76404feaed597bb4f5234d34d3f49e2d1139bf. For more details please see the references link.