audio: chain_dma: do not hold spinlock when calling schedule_task_free

schedule_task_free() might be a blocking call. E.g. the Zephyr
LL-scheduler implementation can call k_sem_take(). Do not call
this function with a spinlock held.

Link: #7156
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

src/audio/chain_dma.c

@@ -338,10 +338,12 @@ static int chain_task_pause(struct comp_dev *dev)
 	if (!ret)
 		ret = ret2;
 
+	k_spin_unlock(&drivers->lock, key);
+
 	schedule_task_cancel(&cd->chain_task);
 	schedule_task_free(&cd->chain_task);
 	pm_policy_state_lock_put(PM_STATE_RUNTIME_IDLE, PM_ALL_SUBSTATES);
-	k_spin_unlock(&drivers->lock, key);
+
 	return ret;
 }