rtc: Remove dev_err() usage after platform_get_irq()

We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-rtc@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-40-swboyd@chromium.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-zynqmp.c

@@ -218,10 +218,8 @@ static int xlnx_rtc_probe(struct platform_device *pdev)
 		return PTR_ERR(xrtcdev->reg_base);
 
 	xrtcdev->alarm_irq = platform_get_irq_byname(pdev, "alarm");
-	if (xrtcdev->alarm_irq < 0) {
-		dev_err(&pdev->dev, "no irq resource\n");
+	if (xrtcdev->alarm_irq < 0)
 		return xrtcdev->alarm_irq;
-	}
 	ret = devm_request_irq(&pdev->dev, xrtcdev->alarm_irq,
 			       xlnx_rtc_interrupt, 0,
 			       dev_name(&pdev->dev), xrtcdev);
@@ -231,10 +229,8 @@ static int xlnx_rtc_probe(struct platform_device *pdev)
 	}
 
 	xrtcdev->sec_irq = platform_get_irq_byname(pdev, "sec");
-	if (xrtcdev->sec_irq < 0) {
-		dev_err(&pdev->dev, "no irq resource\n");
+	if (xrtcdev->sec_irq < 0)
 		return xrtcdev->sec_irq;
-	}
 	ret = devm_request_irq(&pdev->dev, xrtcdev->sec_irq,
 			       xlnx_rtc_interrupt, 0,
 			       dev_name(&pdev->dev), xrtcdev);