[dpdk-stable] [17.11] net/mlx5: fix initialization of struct members

[Ali Alnubani]

[ backported from upstream commit 0c15f3c010322853078c20a2a9926d3fb5986548 ]

This patch fixes compilation errors with meson and the clang
compiler caused by some of the struct members not being
initialized.

```
../drivers/net/mlx5/mlx5_mr.c:345:37: error: missing field 'end'
initializer [-Werror,-Wmissing-field-initializers]
                struct mlx5_mr_cache entry = { 0, };
                                                  ^
../drivers/net/mlx5/mlx5_mr.c:389:36: error: missing field 'end'
initializer [-Werror,-Wmissing-field-initializers]
                        struct mlx5_mr_cache ret = { 0, };
                                                        ^
../drivers/net/mlx5/mlx5_mr.c:691:35: error: missing field 'end'
initializer [-Werror,-Wmissing-field-initializers]
                struct mlx5_mr_cache ret = { 0, };
                                                ^
```

The compilation errors reproduce with
clang version 3.4.2 (tags/RELEASE_34/dot2-final) on RHEL.

Fixes: 87011737b715 ("mlx5: add software counters")

Signed-off-by: Ali Alnubani <alialnu at mellanox.com>
Acked-by: Shahaf Shuler <shahafs at mellanox.com>
---
 drivers/net/mlx5/mlx5_stats.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c
index 345ed7075..e880d24c5 100644
--- a/drivers/net/mlx5/mlx5_stats.c
+++ b/drivers/net/mlx5/mlx5_stats.c
@@ -356,10 +356,11 @@ int
 mlx5_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 {
 	struct priv *priv = dev->data->dev_private;
-	struct rte_eth_stats tmp = {0};
+	struct rte_eth_stats tmp;
 	unsigned int i;
 	unsigned int idx;
 
+	memset(&tmp, 0, sizeof(tmp));
 	/* Add software counters. */
 	for (i = 0; (i != priv->rxqs_n); ++i) {
 		struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
-- 
2.19.1