Don't return a positive value when there are too many chipselects.

Fixes: 4d8ff6b0991d ("spi: Add multi-cs memories support in SPI core")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
v1 -> v2:
* no changes

 drivers/spi/spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index f95c4304df8e..b07d6cdf587c 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2445,7 +2445,7 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
 	if (rc > ctlr->num_chipselect) {
 		dev_err(&ctlr->dev, "%pOF has number of CS > ctlr->num_chipselect (%d)\n",
 			nc, rc);
-		return rc;
+		return -EINVAL;
 	}
 	if ((of_property_present(nc, "parallel-memories")) &&
 	    (!(ctlr->flags & SPI_CONTROLLER_MULTI_CS))) {
-- 
2.43.0