net: hns3: remove rebundant line for hclge_dbg_dump_tm_pg()

Return value judgment should follow the function call, so remove line
between them.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c

@@ -782,7 +782,6 @@ static int hclge_dbg_dump_tm_pg(struct hclge_dev *hdev, char *buf, int len)
 
 	data_str = kcalloc(ARRAY_SIZE(tm_pg_items),
 			   HCLGE_DBG_DATA_STR_LEN, GFP_KERNEL);
-
 	if (!data_str)
 		return -ENOMEM;