dmaengine: 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: Vinod Koul <vkoul@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: dmaengine@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-11-swboyd@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/mediatek/mtk-uart-apdma.c

@@ -547,10 +547,8 @@ static int mtk_uart_apdma_probe(struct platform_device *pdev)
 		vchan_init(&c->vc, &mtkd->ddev);
 
 		rc = platform_get_irq(pdev, i);
-		if (rc < 0) {
-			dev_err(&pdev->dev, "failed to get IRQ[%d]\n", i);
+		if (rc < 0)
 			goto err_no_dma;
-		}
 		c->irq = rc;
 	}