video: squash lines for immediate return

For vidconsole_post_probe(), it is common coding style to let a
probe method return the value of a register function.

The others will become simple wrapper functions.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>

drivers/video/bridge/ptn3460.c

@@ -11,14 +11,9 @@
 
 static int ptn3460_attach(struct udevice *dev)
 {
-	int ret;
-
 	debug("%s: %s\n", __func__, dev->name);
-	ret = video_bridge_set_active(dev, true);
-	if (ret)
-		return ret;
 
-	return 0;
+	return video_bridge_set_active(dev, true);
 }
 
 struct video_bridge_ops ptn3460_ops = {

drivers/video/broadwell_igd.c

@@ -323,10 +323,7 @@ err:
 static unsigned long gtt_read(struct broadwell_igd_priv *priv,
 			      unsigned long reg)
 {
-	u32 val;
-
-	val = readl(priv->regs + reg);
-	return val;
+	return readl(priv->regs + reg);
 }
 
 static void gtt_write(struct broadwell_igd_priv *priv, unsigned long reg,

drivers/video/exynos/exynos_dp_lowlevel.c

@@ -881,11 +881,7 @@ void exynos_dp_set_lane_count(struct exynos_dp *dp_regs, unsigned char count)
 
 unsigned int exynos_dp_get_lane_count(struct exynos_dp *dp_regs)
 {
-	unsigned int reg;
-
-	reg = readl(&dp_regs->lane_count_set);
-
-	return reg;
+	return readl(&dp_regs->lane_count_set);
 }
 
 unsigned char exynos_dp_get_lanex_pre_emphasis(struct exynos_dp *dp_regs,

drivers/video/tegra124/display.c

@@ -326,13 +326,7 @@ static int display_update_config_from_edid(struct udevice *dp_dev,
 					   int *panel_bppp,
 					   struct display_timing *timing)
 {
-	int ret;
-
-	ret = display_read_timing(dp_dev, timing);
-	if (ret)
-		return ret;
-
-	return 0;
+	return display_read_timing(dp_dev, timing);
 }
 
 static int display_init(struct udevice *dev, void *lcdbase,

drivers/video/vidconsole-uclass.c

@@ -190,7 +190,6 @@ static int vidconsole_post_probe(struct udevice *dev)
 {
 	struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
 	struct stdio_dev *sdev = &priv->sdev;
-	int ret;
 
 	if (!priv->tab_width_frac)
 		priv->tab_width_frac = VID_TO_POS(priv->x_charsize) * 8;
@@ -206,11 +205,8 @@ static int vidconsole_post_probe(struct udevice *dev)
 	sdev->putc = vidconsole_putc;
 	sdev->puts = vidconsole_puts;
 	sdev->priv = dev;
-	ret = stdio_register(sdev);
-	if (ret)
-		return ret;
 
-	return 0;
+	return stdio_register(sdev);
 }
 
 UCLASS_DRIVER(vidconsole) = {