[NETFILTER]: x_tables: fix return values for LOG/ULOG

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/netfilter/ipt_LOG.c

@@ -471,8 +471,11 @@ static struct nf_logger ipt_log_logger ={
 
 static int __init ipt_log_init(void)
 {
-	if (ipt_register_target(&ipt_log_reg))
-		return -EINVAL;
+	int ret;
+
+	ret = ipt_register_target(&ipt_log_reg);
+	if (ret < 0)
+		return ret;
 	if (nf_log_register(PF_INET, &ipt_log_logger) < 0) {
 		printk(KERN_WARNING "ipt_LOG: not logging via system console "
 		       "since somebody else already registered for PF_INET\n");

net/ipv4/netfilter/ipt_ULOG.c

@@ -379,7 +379,7 @@ static struct nf_logger ipt_ulog_logger = {
 
 static int __init ipt_ulog_init(void)
 {
-	int i;
+	int ret, i;
 
 	DEBUGP("ipt_ULOG: init module\n");
 
@@ -400,9 +400,10 @@ static int __init ipt_ulog_init(void)
 	if (!nflognl)
 		return -ENOMEM;
 
-	if (ipt_register_target(&ipt_ulog_reg) != 0) {
+	ret = ipt_register_target(&ipt_ulog_reg);
+	if (ret < 0) {
 		sock_release(nflognl->sk_socket);
-		return -EINVAL;
+		return ret;
 	}
 	if (nflog)
 		nf_log_register(PF_INET, &ipt_ulog_logger);

net/ipv6/netfilter/ip6t_LOG.c

@@ -482,8 +482,11 @@ static struct nf_logger ip6t_logger = {
 
 static int __init ip6t_log_init(void)
 {
-	if (ip6t_register_target(&ip6t_log_reg))
-		return -EINVAL;
+	int ret;
+
+	ret = ip6t_register_target(&ip6t_log_reg);
+	if (ret < 0)
+		return ret;
 	if (nf_log_register(PF_INET6, &ip6t_logger) < 0) {
 		printk(KERN_WARNING "ip6t_LOG: not logging via system console "
 		       "since somebody else already registered for PF_INET6\n");