ethdev: fix memory leak in xstats telemetry

[ upstream commit 2d00e2b ]

The 'eth_xstats' should be freed after telemetry dictionary setup.

Fixes: c190dae ("ethdev: add telemetry callbacks")

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

lib/ethdev/rte_ethdev.c

@@ -6275,6 +6275,7 @@ eth_dev_handle_port_xstats(const char *cmd __rte_unused,
 	for (i = 0; i < num_xstats; i++)
 		rte_tel_data_add_dict_u64(d, xstat_names[i].name,
 				eth_xstats[i].value);
+	free(eth_xstats);
 	return 0;
 }