net: sched: gred: remove NULL check before free table->tab in gred_destroy()

The kfree invoked by gred_destroy_vq checks whether the input parameter
is empty. Therefore, gred_destroy() doesn't need to check table->tab.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Link: https://lore.kernel.org/r/20220831041452.33026-1-shaozhengchao@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 44af3b18eed901527bbc4e2a6e945ae3f54b0401..a661b062cca85431845ef3abf84205035d3029ae 100644 (file)
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -908,10 +908,9 @@ static void gred_destroy(struct Qdisc *sch)
        struct gred_sched *table = qdisc_priv(sch);
        int i;
 
-       for (i = 0; i < table->DPs; i++) {
-               if (table->tab[i])
-                       gred_destroy_vq(table->tab[i]);
-       }
+       for (i = 0; i < table->DPs; i++)
+               gred_destroy_vq(table->tab[i]);
+
        gred_offload(sch, TC_GRED_DESTROY);
        kfree(table->opt);
 }