netfilter: xtables: make use of xt_request_find_target

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 9a248d4..bf2806a 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -250,9 +250,7 @@
 
 	target = try_then_request_module(xt_find_target(af, name, revision),
 					 "%st_%s", xt_prefix[af], name);
-	if (IS_ERR(target) || !target)
-		return NULL;
-	return target;
+	return (target != NULL) ? target : ERR_PTR(-ENOENT);
 }
 EXPORT_SYMBOL_GPL(xt_request_find_target);