From: Fugang Duan <fugang.duan@nxp.com>
Date: Wed, 3 Jan 2018 10:39:29 +0800
Subject: net: fec: restore dev_id in the cases of probe error
Git-commit: e90f686b4358d7d7e5dbaa48b8e78c9a4e41826e
Patch-mainline: v4.15-rc8
References: networking-stable-18_01_12

The static variable dev_id always plus one before netdev registerred.
It should restore the dev_id value in the cases of probe error.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/net/ethernet/freescale/fec_main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -3517,6 +3517,7 @@ failed_phy:
 	of_node_put(phy_node);
 failed_ioremap:
 	free_netdev(ndev);
+	dev_id--;
 
 	return ret;
 }