net: hns3: remove an unnecessary check in hclge_set_umv_space()

Since hclge_set_umv_space() is only called by hclge_init_umv_space(),
parameter 'allocated_size' will not be NULL.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -7227,8 +7227,7 @@ static int hclge_set_umv_space(struct hclge_dev *hdev, u16 space_size,
 		return ret;
 	}
 
-	if (allocated_size)
-		*allocated_size = le32_to_cpu(desc.data[1]);
+	*allocated_size = le32_to_cpu(desc.data[1]);
 
 	return 0;
 }