net: Remove redundant if statements

The 'if (dev)' statement already move into dev_{put , hold}, so remove
redundant if statements.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index f29feb7..b42c429 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -208,9 +208,7 @@ static void rt_fibinfo_free_cpus(struct rtable __rcu * __percpu *rtp)
 
 void fib_nh_common_release(struct fib_nh_common *nhc)
 {
-	if (nhc->nhc_dev)
-		dev_put(nhc->nhc_dev);
-
+	dev_put(nhc->nhc_dev);
 	lwtstate_put(nhc->nhc_lwtstate);
 	rt_fibinfo_free_cpus(nhc->nhc_pcpu_rth_output);
 	rt_fibinfo_free(&nhc->nhc_rth_input);