diff --git a/dsp/q6core.c b/dsp/q6core.c
index df72815babc9..1df46209377f 100644
--- a/dsp/q6core.c
+++ b/dsp/q6core.c
@@ -1506,8 +1506,10 @@ int q6core_map_mdf_memory_regions(uint64_t *buf_add, uint32_t mempool_id,
 			* bufcnt;
 
 	mmap_region_cmd = kzalloc(cmd_size, GFP_KERNEL);
-	if (mmap_region_cmd == NULL)
+	if (mmap_region_cmd == NULL) {
+		mutex_unlock(&q6core_lcl.cmd_lock);
 		return -ENOMEM;
+	}
 
 	mmap_regions = (struct avs_cmd_shared_mem_map_regions *)mmap_region_cmd;
 	mmap_regions->hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,