spi: ep93xx: Fix checkpatch issue

Fix the following checkpatch warnings.

  WARNING: Missing a blank line after declarations
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-ep93xx.c

@@ -266,6 +266,7 @@ static int ep93xx_spi_setup(struct spi_device *spi)
 
 		if (chip->ops && chip->ops->setup) {
 			int ret = chip->ops->setup(spi);
+
 			if (ret) {
 				kfree(chip);
 				return ret;