cppcheck warnings with SOF_IPC4_INVALID_NODE_ID #4048

sound/soc/sof/ipc4-pcm.c:568:5: style: Mismatching assignment and comparison, comparison 'node_id==0xffffffff' is always false. [assignIfError]
 if (node_id == SOF_IPC4_INVALID_NODE_ID)
    ^
sound/soc/sof/ipc4-pcm.c:567:10: note: Mismatching assignment and comparison, comparison 'node_id==0xffffffff' is always false.
 node_id = SOF_IPC4_NODE_INDEX(host_copier->data.gtw_cfg.node_id);
         ^
sound/soc/sof/ipc4-pcm.c:568:5: note: Mismatching assignment and comparison, comparison 'node_id==0xffffffff' is always false.
 if (node_id == SOF_IPC4_INVALID_NODE_ID)
    ^

ipc4-topology.h:#define SOF_IPC4_NODE_INDEX_MASK	0xFF
ipc4-topology.h:#define SOF_IPC4_NODE_INDEX(x)	((x) & SOF_IPC4_NODE_INDEX_MASK)

ipc4-topology.h:#define SOF_IPC4_INVALID_NODE_ID	0xffffffff

 #define SOF_IPC4_INVALID_NODE_ID SOF_IPC4_NODE_INDEX_MASK