fec: Fix the order for enabling/disabling the clocks

On fec_probe the clocks are enabled in the following order:

clk_ahb -> clk_ipg -> clk_enet_out -> clk_ptp

, so in the error and remove paths we should disabled them in the opposite
order.

Also fix the order in the suspend/resume functions.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/fec_main.c

@@ -2179,12 +2179,12 @@ failed_init:
 	if (fep->reg_phy)
 		regulator_disable(fep->reg_phy);
 failed_regulator:
-	clk_disable_unprepare(fep->clk_ahb);
-	clk_disable_unprepare(fep->clk_ipg);
-	if (fep->clk_enet_out)
-		clk_disable_unprepare(fep->clk_enet_out);
 	if (fep->clk_ptp)
 		clk_disable_unprepare(fep->clk_ptp);
+	if (fep->clk_enet_out)
+		clk_disable_unprepare(fep->clk_enet_out);
+	clk_disable_unprepare(fep->clk_ipg);
+	clk_disable_unprepare(fep->clk_ahb);
 failed_clk:
 failed_ioremap:
 	free_netdev(ndev);
@@ -2216,8 +2216,8 @@ fec_drv_remove(struct platform_device *pdev)
 		ptp_clock_unregister(fep->ptp_clock);
 	if (fep->clk_enet_out)
 		clk_disable_unprepare(fep->clk_enet_out);
-	clk_disable_unprepare(fep->clk_ahb);
 	clk_disable_unprepare(fep->clk_ipg);
+	clk_disable_unprepare(fep->clk_ahb);
 	free_netdev(ndev);
 
 	return 0;
@@ -2236,8 +2236,8 @@ fec_suspend(struct device *dev)
 	}
 	if (fep->clk_enet_out)
 		clk_disable_unprepare(fep->clk_enet_out);
-	clk_disable_unprepare(fep->clk_ahb);
 	clk_disable_unprepare(fep->clk_ipg);
+	clk_disable_unprepare(fep->clk_ahb);
 
 	if (fep->reg_phy)
 		regulator_disable(fep->reg_phy);
@@ -2258,10 +2258,10 @@ fec_resume(struct device *dev)
 			return ret;
 	}
 
-	if (fep->clk_enet_out)
-		clk_prepare_enable(fep->clk_enet_out);
 	clk_prepare_enable(fep->clk_ahb);
 	clk_prepare_enable(fep->clk_ipg);
+	if (fep->clk_enet_out)
+		clk_prepare_enable(fep->clk_enet_out);
 	if (netif_running(ndev)) {
 		fec_restart(ndev, fep->full_duplex);
 		netif_device_attach(ndev);