netfilter: nf_conntrack_h323: fix memory leak in module initialization error path

Properly free h323_buffer when helper registration fails.

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: kaber

net/netfilter/nf_conntrack_h323_main.c

@@ -1799,6 +1799,7 @@ static int __init nf_conntrack_h323_init(void)
 err2:
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_q931[0]);
 err1:
+	kfree(h323_buffer);
 	return ret;
 }