Impact: cleanup, no functionality changed

Because e->name is unique in list, we don't need to continue the iteration
after matched.
Signed-off-by: NZhao Lei <zhaolei@cn.fujitsu.com>
Acked-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: NIngo Molnar <mingo@elte.hu>