[U-Boot] [PATCH 1/2] nitrogen6x: Fix the error handling in board_eth_init()

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <fabio.estevam@freescale.com>

We should not return 0 on failure, so return a negative error code 
instead.

Also centralize the error path so that is easier to follow.

Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/boundary/nitrogen6x/nitrogen6x.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index d46b8db..104d71f 100644
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -387,20 +387,17 @@ int board_eth_init(bd_t *bis)
 #ifdef CONFIG_FEC_MXC
 	bus = fec_get_miibus(base, -1);
 	if (!bus)
-		return 0;
+		return -EINVAL;
 	/* scan phy 4,5,6,7 */
 	phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
 	if (!phydev) {
-		free(bus);
-		return 0;
+		ret = -EINVAL;
+		goto free_bus;
 	}
 	printf("using phy@%d\n", phydev->addr);
 	ret  = fec_probe(bis, -1, base, bus, phydev);
-	if (ret) {
-		printf("FEC MXC: %s:failed\n", __func__);
-		free(phydev);
-		free(bus);
-	}
+	if (ret)
+		goto free_phydev;
 #endif
 
 #ifdef CONFIG_CI_UDC
@@ -408,6 +405,12 @@ int board_eth_init(bd_t *bis)
 	usb_eth_initialize(bis);
 #endif
 	return 0;
+
+free_phydev:
+	free(phydev);
+free_bus:
+	free(bus);
+	return ret;
 }
 
 static void setup_buttons(void)
-- 
1.9.1