CVE-2023-53818 ARM: zynq: Fix refcount leak in zynq_early_slcr_init

In the Linux kernel, the following vulnerability has been resolved: ARM: zynq: Fix refcount leak in zynqearlyslcrinit offindcompatiblenode returns a node pointer with refcount incremented, we should use ofnodeput on error path. Add missing ofnodeput to avoid refcount leak...