mx28evk: Propagate the error if cpu_eth_init() fails

If cpu_eth_init() fails we should return the error immediately.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

board/freescale/mx28evk/mx28evk.c

@@ -103,6 +103,8 @@ int board_eth_init(bd_t *bis)
 	int ret;
 
 	ret = cpu_eth_init(bis);
+	if (ret)
+		return ret;
 
 	/* MX28EVK uses ENET_CLK PAD to drive FEC clock */
 	writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,