CVE-2024-42282 net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling

In the Linux kernel, the following vulnerability has been resolved: net: mediatek: Fix potential NULL pointer dereference in dummy netdevice handling Move the freeing of the dummy netdevice from mtkfreedev to mtkremove. Previously, if allocnetdevdummy failed in mtkprobe, eth-dummydev would be NUL...