[PATCH] net: gianfar: fix reference counting for phy_node

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

The line before the changed if condition is:

	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);

. If this call succeeds priv->phy_node must not be overwritten in the if
block; otherwise the reference to the node returned by of_parse_phandle
is lost. So add a check that the if block isn't executed in this case.

Furthermore in the fixed phy case no reference is aquired for phy_node
resulting in an of_node_put without holding a reference. To fix that,
get a reference on the MAC dt node.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/net/ethernet/freescale/gianfar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 6b0c4775cd0d..adc7c718c4bc 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -897,7 +897,7 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
 		if (err)
 			goto err_grp_init;
 
-		priv->phy_node = np;
+		priv->phy_node = of_node_get(np);
 	}
 
 	/* Find the TBI PHY.  If it's not there, we don't support SGMII */
-- 
2.0.1