hwrng: imx-rngc - irq already prints an error

Clean up the check for irq. dev_err() is superfluous as
platform_get_irq() already prints an error. Check for zero
would indicate a bug. Remove curly braces to conform to
styling requirements.
Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/char/hw_random/imx-rngc.c

@@ -252,10 +252,8 @@ static int imx_rngc_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0) {
-		dev_err(&pdev->dev, "Couldn't get irq %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 
 	ret = clk_prepare_enable(rngc->clk);
 	if (ret)