drivers/net: Remove pointless checks for NULL prior to calling kfree()
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 85d6dc0..3e9accf 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -390,10 +390,8 @@
 		       "MTU change cancelled.\n",
 		       ax->dev->name);
 		dev->mtu = ax->mtu;
-		if (xbuff != NULL)
-			kfree(xbuff);
-		if (rbuff != NULL)
-			kfree(rbuff);
+		kfree(xbuff);
+		kfree(rbuff);
 		return;
 	}