hummingboard: Return from cpu_eth_init() directly

There is no need to print an error message when cpu_eth_init() fails because
net/eth.c already prints it.

In order to simplify the code, just return the value from cpu_eth_init(bis)
directly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/solidrun/hummingboard/hummingboard.c b/board/solidrun/hummingboard/hummingboard.c
index 8b309b4..2e2fb2a 100644
--- a/board/solidrun/hummingboard/hummingboard.c
+++ b/board/solidrun/hummingboard/hummingboard.c
@@ -156,11 +156,7 @@
 
 	setup_iomux_enet();
 
-	ret = cpu_eth_init(bis);
-	if (ret)
-		printf("FEC MXC: %s:failed\n", __func__);
-
-	return ret;
+	return cpu_eth_init(bis);
 }
 #endif