ARM: imx: use PTR_ERR_OR_ZERO

replace IS_ERR/PTR_ERR

Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
diff --git a/arch/arm/mach-imx/devices/platform-mxc_rnga.c b/arch/arm/mach-imx/devices/platform-mxc_rnga.c
index c58404b..851fbc8a 100644
--- a/arch/arm/mach-imx/devices/platform-mxc_rnga.c
+++ b/arch/arm/mach-imx/devices/platform-mxc_rnga.c
@@ -48,9 +48,6 @@
 #endif /* if defined(CONFIG_SOC_IMX31) */
 		ret = ERR_PTR(-ENODEV);
 
-	if (IS_ERR(ret))
-		return PTR_ERR(ret);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(ret);
 }
 arch_initcall(imxXX_add_mxc_rnga);
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index 6bed570..bb6f8a5 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -435,10 +435,8 @@
 		return -ENODEV;
 
 	pdev = imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 static const struct gpio_led mx31moboard_leds[] __initconst = {
diff --git a/arch/arm/mach-imx/mx31moboard-devboard.c b/arch/arm/mach-imx/mx31moboard-devboard.c
index 1e4ea16..1e91a09 100644
--- a/arch/arm/mach-imx/mx31moboard-devboard.c
+++ b/arch/arm/mach-imx/mx31moboard-devboard.c
@@ -214,10 +214,8 @@
 	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 
diff --git a/arch/arm/mach-imx/mx31moboard-marxbot.c b/arch/arm/mach-imx/mx31moboard-marxbot.c
index 699d01a..2e895a8 100644
--- a/arch/arm/mach-imx/mx31moboard-marxbot.c
+++ b/arch/arm/mach-imx/mx31moboard-marxbot.c
@@ -328,10 +328,8 @@
 	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
diff --git a/arch/arm/mach-imx/mx31moboard-smartbot.c b/arch/arm/mach-imx/mx31moboard-smartbot.c
index 4b3d66e..89fc35a 100644
--- a/arch/arm/mach-imx/mx31moboard-smartbot.c
+++ b/arch/arm/mach-imx/mx31moboard-smartbot.c
@@ -142,10 +142,8 @@
 		return -ENODEV;
 
 	pdev = imx31_add_mxc_ehci_otg(&otg_host_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 #else
 static inline int smartbot_otg_host_init(void) { return 0; }