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iio:dac:ad3552r: Fix an IS_ERR() vs NULL check 

The fwnode_get_named_child_node() function does not return error
pointers.  It returns NULL.  Update the check accordingly.

Fixes: 8f2b54824b ("drivers:iio:dac: Add AD3552R driver support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220404114244.GA19201@kili
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Dan Carpenter 2022-04-04 14:42:44 +03:00 committed by Jonathan Cameron
parent d79478a79c
commit de3b9fe960
1 changed files with 2 additions and 2 deletions
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drivers/iio/dac/ad3552r.c
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@ -809,10 +809,10 @@ static int ad3552r_configure_custom_gain(struct ad3552r_desc *dac,
gain_child = fwnode_get_named_child_node(child,
"custom-output-range-config");
if (IS_ERR(gain_child)) {
if (!gain_child) {
dev_err(dev,
"mandatory custom-output-range-config property missing\n");
return PTR_ERR(gain_child);
return -EINVAL;
}
dac->ch_data[ch].range_override = 1;