net/dpaa2: fix dpdmux default interface

[ upstream commit 0b5da8c ]

if dpdmux objects created by restool tools with
the argument "--default-if=<if-id-number>", this
function would change it to 1

Fixes: 1def64c ("net/dpaa2: add dpdmux initialization and configuration")

Signed-off-by: Tianli Lai <laitianli@tom.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>

drivers/net/dpaa2/dpaa2_mux.c

@@ -296,7 +296,7 @@ dpaa2_create_dpdmux_device(int vdev_fd __rte_unused,
 	}
 
 	ret = dpdmux_if_set_default(&dpdmux_dev->dpdmux, CMD_PRI_LOW,
-				    dpdmux_dev->token, 1);
+				    dpdmux_dev->token, attr.default_if);
 	if (ret) {
 		DPAA2_PMD_ERR("setting default interface failed in %s",
 			      __func__);