[NETFILTER]: ip_tables: compat error way cleanup

This patch adds forgotten compat_flush_offset() call to error way of
translate_compat_table().  May lead to table corruption on the next
compat_do_replace().

Signed-off-by: Vasily Averin <vvs@openvz.org>
Acked-by: Dmitry Mishin <dim@openvz.org>
Acked-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index e2c7f6e..0f4835c 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1725,6 +1725,7 @@
 out:
 	return ret;
 out_unlock:
+	compat_flush_offsets();
 	xt_compat_unlock(AF_INET);
 	goto out;
 }