test/event: fix crypto null device creation

[ upstream commit cf57682e1b6fea41566325eb92b0978bd0209904 ]

Create crypto null device only if no other crypto devices
were found.

Fixes: 3c2c535 ("test: add event crypto adapter auto-test")

Signed-off-by: Aakash Sasidharan <asasidharan@marvell.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Abhinandan Gujjar <abhinandan.gujjar@intel.com>

app/test/test_event_crypto_adapter.c

@@ -523,11 +523,10 @@ configure_cryptodev(void)
 		return TEST_FAILED;
 	}
 
-	/* Create a NULL crypto device */
-	nb_devs = rte_cryptodev_device_count_by_driver(
-			rte_cryptodev_driver_id_get(
-			RTE_STR(CRYPTODEV_NAME_NULL_PMD)));
+
+	nb_devs = rte_cryptodev_count();
 	if (!nb_devs) {
+		/* Create a NULL crypto device */
 		ret = rte_vdev_init(
 			RTE_STR(CRYPTODEV_NAME_NULL_PMD), NULL);