Re: [PATCH v1 net-next] net: merge redundancy judgement

'if' and 'elseif' do the same operation,
so merge then into a case.

Signed-off-by: Martin Zhang <redacted>
---
 net/ipv4/route.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index ad50643..9b5468c 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c

@@ -802,11 +802,8 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
 	struct dst_entry *ret = dst;
 
 	if (rt) {
-		if (dst->obsolete > 0) {
-			ip_rt_put(rt);
-			ret = NULL;
-		} else if ((rt->rt_flags & RTCF_REDIRECTED) ||
-			   rt->dst.expires) {
+		if (dst->obsolete > 0 || (rt->rt_flags & RTCF_REDIRECTED)
+		 || rt->dst.expires) {