[DCCP]: Fix leak in net/dccp/ipv4.c

we dont free req if we cant parse the options.
This fixes coverity bug id #1046

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 2904799..f2c011f 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -498,7 +498,7 @@
 		goto drop;
 
 	if (dccp_parse_options(sk, skb))
-		goto drop;
+		goto drop_and_free;
 
 	dccp_openreq_init(req, &dp, skb);