net,rcu: convert call_rcu(phonet_device_rcu_free) to kfree_rcu()

The rcu callback phonet_device_rcu_free() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(phonet_device_rcu_free).

Signed-off-by: Lai Jiangshan <[email protected]>
Acked-by: David S. Miller <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
1 file changed