[patch] iio: dac: ad5592r: Off by one bug in ad5592r_alloc_channels()

[Dan Carpenter]

The > here should be >= or we go beyond the end for the array.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c
index 948f600..69bde59 100644
--- a/drivers/iio/dac/ad5592r-base.c
+++ b/drivers/iio/dac/ad5592r-base.c
@@ -525,7 +525,7 @@ static int ad5592r_alloc_channels(struct ad5592r_state *st)
 
        device_for_each_child_node(st->dev, child) {
                ret = fwnode_property_read_u32(child, "reg", &reg);
-               if (ret || reg > ARRAY_SIZE(st->channel_modes))
+               if (ret || reg >= ARRAY_SIZE(st->channel_modes))
                        continue;
 
                ret = fwnode_property_read_u32(child, "adi,mode", &tmp);