ASoC: audio-graph-card2: Use cleanup.h instead of devm_kfree()

Allocate the memory with scoped/cleanup.h, instead of devm interface, to
make the code more obvious that memory is not used outside this scope.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/20240703-asoc-cleanup-h-v1-7-71219dfd0aef@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: krzk

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

@@ -1350,10 +1350,9 @@ int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev,
 			  struct graph2_custom_hooks *hooks)
 {
 	struct snd_soc_card *card = simple_priv_to_card(priv);
-	struct link_info *li;
 	int ret;
 
-	li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL);
+	struct link_info *li __free(kfree) = kzalloc(sizeof(*li), GFP_KERNEL);
 	if (!li)
 		return -ENOMEM;
 
@@ -1417,8 +1416,6 @@ int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev,
 
 	ret = devm_snd_soc_register_card(dev, card);
 err:
-	devm_kfree(dev, li);
-
 	if (ret < 0)
 		dev_err_probe(dev, ret, "parse error\n");