rxrpc: Fix exclusive client connections

Exclusive connections are currently reusable (which they shouldn't be)
because rxrpc_alloc_client_connection() checks the exclusive flag in the
rxrpc_connection struct before it's initialised from the function
parameters.  This means that the DONT_REUSE flag doesn't get set.

Fix this by checking the function parameters for the exclusive flag.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c
index c76a125..f5ee8bf 100644
--- a/net/rxrpc/conn_client.c
+++ b/net/rxrpc/conn_client.c
@@ -200,7 +200,7 @@
 	}
 
 	atomic_set(&conn->usage, 1);
-	if (conn->params.exclusive)
+	if (cp->exclusive)
 		__set_bit(RXRPC_CONN_DONT_REUSE, &conn->flags);
 
 	conn->params		= *cp;