mtd: spi-nor: Fix some error codes in cqspi_setup_flash()

We return success or possibly uninitialized values on these error paths
instead of proper error codes.

Fixes: 140623410536 ("mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c
index 944863be0320..d489fbd07c12 100644
--- a/drivers/mtd/spi-nor/cadence-quadspi.c
+++ b/drivers/mtd/spi-nor/cadence-quadspi.c
@@ -1077,12 +1077,14 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi, struct device_node *np)
 
         /* Get flash device data */
         for_each_available_child_of_node(dev->of_node, np) {
-                if (of_property_read_u32(np, "reg", &cs)) {
+                ret = of_property_read_u32(np, "reg", &cs);
+                if (ret) {
                         dev_err(dev, "Couldn't determine chip select.\n");
                         goto err;
                 }
 
                 if (cs >= CQSPI_MAX_CHIPSELECT) {
+                        ret = -EINVAL;
                         dev_err(dev, "Chip select %d out of range.\n", cs);
                         goto err;
                 }