spi/rockchip: fix error return code in rockchip_spi_probe()

Fix to return -EINVAL from the error handling case instead of 0 when
failed to get fifo length.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 47c9168f18b2..c0743604b906 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -640,6 +640,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
         rs->fifo_len = get_fifo_len(rs);
         if (!rs->fifo_len) {
                 dev_err(&pdev->dev, "Failed to get fifo length\n");
+                ret = -EINVAL;
                 goto err_get_fifo_len;
         }