net: cleanup some rcu_dereference_raw

RCU api had been completed and rcu_access_pointer() or
rcu_dereference_protected() are better than generic
rcu_dereference_raw()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 0657b57..67c5c28 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -545,7 +545,7 @@
 	frh->flags = rule->flags;
 
 	if (rule->action == FR_ACT_GOTO &&
-	    rcu_dereference_raw(rule->ctarget) == NULL)
+	    rcu_access_pointer(rule->ctarget) == NULL)
 		frh->flags |= FIB_RULE_UNRESOLVED;
 
 	if (rule->iifname[0]) {