spi/fsl: Use PTR_RET function

Replaced calls to IS_ERR and PTR_ERR with PTR_RET function.
Patch found using coccinelle.

Signed-off-by: Alexandru Gheorghiu <gheorghiuandru@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index 086a9ee..1985ba3 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -1134,9 +1134,7 @@
 		return -EINVAL;
 
 	master = fsl_spi_probe(&pdev->dev, mem, irq);
-	if (IS_ERR(master))
-		return PTR_ERR(master);
-	return 0;
+	return PTR_RET(master);
 }
 
 static int plat_mpc8xxx_spi_remove(struct platform_device *pdev)