net: prestera: flower: fix destroy tmpl in chain

Fix flower destroy template callback to release template
only for specific tc chain instead of all chain tempaltes.

The issue was intruduced by previous commit that introduced
multi-chain support.

Fixes: fa5d824c ("net: prestera: acl: add multi-chain support offload")
Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/prestera/prestera_flower.c

@@ -12,18 +12,21 @@ struct prestera_flower_template {
 	u32 chain_index;
 };
 
+static void
+prestera_flower_template_free(struct prestera_flower_template *template)
+{
+	prestera_acl_ruleset_put(template->ruleset);
+	list_del(&template->list);
+	kfree(template);
+}
+
 void prestera_flower_template_cleanup(struct prestera_flow_block *block)
 {
-	struct prestera_flower_template *template;
-	struct list_head *pos, *n;
+	struct prestera_flower_template *template, *tmp;
 
 	/* put the reference to all rulesets kept in tmpl create */
-	list_for_each_safe(pos, n, &block->template_list) {
-		template = list_entry(pos, typeof(*template), list);
-		prestera_acl_ruleset_put(template->ruleset);
-		list_del(&template->list);
-		kfree(template);
-	}
+	list_for_each_entry_safe(template, tmp, &block->template_list, list)
+		prestera_flower_template_free(template);
 }
 
 static int
@@ -423,7 +426,14 @@ int prestera_flower_tmplt_create(struct prestera_flow_block *block,
 void prestera_flower_tmplt_destroy(struct prestera_flow_block *block,
 				   struct flow_cls_offload *f)
 {
-	prestera_flower_template_cleanup(block);
+	struct prestera_flower_template *template, *tmp;
+
+	list_for_each_entry_safe(template, tmp, &block->template_list, list)
+		if (template->chain_index == f->common.chain_index) {
+			/* put the reference to the ruleset kept in create */
+			prestera_flower_template_free(template);
+			return;
+		}
 }
 
 int prestera_flower_stats(struct prestera_flow_block *block,