staging: lustre: lnet: remove null check before kfree

Since kfree(NULL) is safe there is no need to place a check before it.
Issue reported by checkpatch.pl
Signed-off-by: Sumit Pundir <pundirsumit11@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/lnet/lib-move.c

@@ -2146,8 +2146,7 @@ lnet_create_reply_msg(struct lnet_ni *ni, struct lnet_msg *getmsg)
 	the_lnet.ln_counters[cpt]->drop_length += getmd->md_length;
 	lnet_net_unlock(cpt);
 
-	if (msg)
-		kfree(msg);
+	kfree(msg);
 
 	return NULL;
 }