FROMLIST: ASoC: qcom: qdsp6: topology: check widget type before accessing data

Check widget type before accessing the private data, as this could a
virtual widget which is no associated with a dsp graph, container and
module. Accessing witout check could lead to incorrect memory access.

Link: https://lore.kernel.org/all/20260223180740.444311-4-srinivas.kandagatla@oss.qualcomm.com/
Fixes: 36ad9bf ("ASoC: qdsp6: audioreach: add topology support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>

Author: Srinivas Kandagatla

sound/soc/qcom/qdsp6/topology.c

@@ -952,9 +952,6 @@ static int audioreach_widget_unload(struct snd_soc_component *scomp,
 	struct audioreach_container *cont;
 	struct audioreach_module *mod;
 
-	mod = dobj->private;
-	cont = mod->container;
-
 	if (w->id == snd_soc_dapm_mixer) {
 		/* virtual widget */
 		struct snd_ar_control *scontrol = dobj->private;
@@ -963,6 +960,11 @@ static int audioreach_widget_unload(struct snd_soc_component *scomp,
 		kfree(scontrol);
 		return 0;
 	}
+	mod = dobj->private;
+	if (!mod)
+		return 0;
+
+	cont = mod->container;
 
 	mutex_lock(&apm->lock);
 	idr_remove(&apm->modules_idr, mod->instance_id);