net/e1000: fix link status

[ upstream commit a407d7c ]

The link status got from link status register was not correct,
because register has been reset when ports reset.
After port reset, set the link status down.

Fixes: c431ec6 ("net/igb: support setting link up or down")

Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

drivers/net/e1000/igb_ethdev.c

@@ -884,6 +884,8 @@ eth_igb_dev_init(struct rte_eth_dev *eth_dev)
 	/* enable support intr */
 	igb_intr_enable(eth_dev);
 
+	eth_igb_dev_set_link_down(eth_dev);
+
 	/* initialize filter info */
 	memset(filter_info, 0,
 	       sizeof(struct e1000_filter_info));