rxrpc: Fix an uninitialised variable

Fix an uninitialised variable introduced by the last patch.  This can cause
a crash when a new call comes in to a local service, such as when an AFS
fileserver calls back to the local cache manager.

Fixes: c1e15b49 ("rxrpc: Fix the packet reception routine")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/rxrpc/call_accept.c

@@ -337,7 +337,7 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
 {
 	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
 	struct rxrpc_connection *conn;
-	struct rxrpc_peer *peer;
+	struct rxrpc_peer *peer = NULL;
 	struct rxrpc_call *call;
 
 	_enter("");