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 v5.15.33 by commit 45962427aca2cc453b72e984252a5ca7861740ee, it was introduced in version v5.2 by commit cc76404feaed597bb4f5234d34d3f49e2d1139bf. For more details please see the references link.