ASoC: soc-core: tidyup for card->deferred_resume_work

card->deferred_resume_work is used if CONFIG_PM_SLEEP was defined.
but
	1) It is defined even though CONFIG_PM_SLEEP was not defined
	2) random ifdef code is difficult to read.
This patch tidyup these issues.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/877e7paho1.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1058,8 +1058,6 @@ struct snd_soc_card {
 	int num_of_dapm_routes;
 	bool fully_routed;
 
-	struct work_struct deferred_resume_work;
-
 	/* lists of probed devices belonging to this card */
 	struct list_head component_dev_list;
 	struct list_head list;
@@ -1079,6 +1077,9 @@ struct snd_soc_card {
 
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_card_root;
+#endif
+#ifdef CONFIG_PM_SLEEP
+	struct work_struct deferred_resume_work;
 #endif
 	u32 pop_time;
 

sound/soc/soc-core.c

@@ -701,9 +701,18 @@ int snd_soc_resume(struct device *dev)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_resume);
+
+static void soc_resume_init(struct snd_soc_card *card)
+{
+	/* deferred resume work */
+	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
+}
 #else
 #define snd_soc_suspend NULL
 #define snd_soc_resume NULL
+static inline void soc_resume_init(struct snd_soc_card *card)
+{
+}
 #endif
 
 static const struct snd_soc_dai_ops null_dai_ops = {
@@ -1984,10 +1993,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 
 	soc_init_card_debugfs(card);
 
-#ifdef CONFIG_PM_SLEEP
-	/* deferred resume work */
-	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
-#endif
+	soc_resume_init(card);
 
 	ret = snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
 					card->num_dapm_widgets);