i2c: imx: propagate irq error code in probe

smatch rightfully says:
drivers/i2c/busses/i2c-imx.c:610 i2c_imx_probe() info: why not propagate 'irq' from platform_get_irq() instead of (-2)?
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-imx.c

@@ -607,7 +607,7 @@ static int i2c_imx_probe(struct platform_device *pdev)
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		dev_err(&pdev->dev, "can't get irq number\n");
-		return -ENOENT;
+		return irq;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);