CVE-2026-53338 net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Add NULL check for ofreservedmemlookup in airohaqdmainithfwdqueues ofreservedmemlookup may return NULL if the reserved memory region referenced by the "memory-region" phandle is not found in the reserved memory table...