ASoC: audio-graph-card2: fix off by one in graph_parse_node_multi_nm()

The > comparison should be >= to avoid writing one element beyond the end
of the dai_link->ch_maps[] array.  The dai_link->ch_maps[] array is
allocated in graph_parse_node_multi() and it has "nm_max" elements.

Fixes: e2de6808 ("ASoC: audio-graph-card2: add CPU:Codec = N:M support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/1032216f-902f-48f9-aa49-9d5ece8e87f2@moroto.mountainSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/generic/audio-graph-card2.c

@@ -557,7 +557,7 @@ static int graph_parse_node_multi_nm(struct snd_soc_dai_link *dai_link,
 		struct device_node *mcodec_port;
 		int codec_idx;
 
-		if (*nm_idx > nm_max)
+		if (*nm_idx >= nm_max)
 			break;
 
 		mcpu_ep_n = of_get_next_child(mcpu_port, mcpu_ep_n);