CVE-2022-50207 ARM: bcm: Fix refcount leak in bcm_kona_smc_init

In the Linux kernel, the following vulnerability has been resolved: ARM: bcm: Fix refcount leak in bcmkonasmcinit offindmatchingnode returns a node pointer with refcount incremented, we should use ofnodeput on it when not need anymore. Add missing ofnodeput to avoid refcount leak...