[PATCH] ASoC: SOF: ipc4-topology: fix alh_group_ida max value

[Pierre-Louis Bossart]

From: Bard Liao <yung-chuan.liao at linux.intel.com>

group_id is from 0 ~ ALH_MULTI_GTW_COUNT - 1, not 0 ~
ALH_MULTI_GTW_COUNT.

Fixes: 0e357b5290532 ("ASoC: SOF: ipc4-topology: add SoundWire/ALH aggregation support"
Reported-by: kernel test robot <lkp at intel.com>
Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
Reviewed-by: Rander Wang <rander.wang at intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/sof/ipc4-topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c
index c6abfaf5d5326..64929dc9af397 100644
--- a/sound/soc/sof/ipc4-topology.c
+++ b/sound/soc/sof/ipc4-topology.c
@@ -1251,7 +1251,7 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget,
 			if (blob->alh_cfg.count > 1) {
 				int group_id;
 
-				group_id = ida_alloc_max(&alh_group_ida, ALH_MULTI_GTW_COUNT,
+				group_id = ida_alloc_max(&alh_group_ida, ALH_MULTI_GTW_COUNT - 1,
 							 GFP_KERNEL);
 
 				if (group_id < 0)
-- 
2.34.1