qcacmn: Add check for dereferencing pointer shmem_arena_ctx

Add check for dereferencing pointer shmem_arena_ctx to avoid
array out of bound error

Change-Id: I6d7caddb3ed83fb5e7397de827cd57e8d238a640
CRs-Fixed: 3620074

target_if/init_deinit/src/mlo_global_h_shmem_arena.c

@@ -942,7 +942,7 @@ uint16_t mgmt_rx_reo_get_valid_link_bitmap(uint8_t grp_id)
 {
 	struct wlan_host_mlo_glb_h_shmem_arena_ctx *shmem_arena_ctx;
 
-	if (grp_id > WLAN_MAX_MLO_GROUPS)
+	if (grp_id >= WLAN_MAX_MLO_GROUPS)
 		return 0;
 
 	shmem_arena_ctx = get_shmem_arena_ctx(grp_id);