CVE-2026-80751 pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()

In the Linux kernel, the following vulnerability has been resolved: pmdomain: mediatek: mfg: initialize prevo in mtkmfgattachdev mtkmfgattachdev reads prevo on the first iteration of its loop, in "if prevo && prevo-freq == o-freq", before prevo is assigned at the end of the loop body. On that fir...