Bluetooth: Remove some pointless conditionals before kfree_skb()

Remove some pointless conditionals before kfree_skb().

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index c9cac77..0073ec8 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -126,8 +126,7 @@
 
 	session->reassembly[id] = nskb;
 
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 }
 
 static inline int cmtp_recv_frame(struct cmtp_session *session, struct sk_buff *skb)