iio: adc: checking for NULL instead of IS_ERR() in probe

commit e94f62e79f7f63a68574ee5e76c19837ec12f3db upstream.

mcb_request_mem() returns an ERR_PTR(), it doesn't return NULL.

Fixes: 74aeac4da66f ('iio: adc: Add MEN 16z188 ADC driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/adc/men_z188_adc.c b/drivers/iio/adc/men_z188_adc.c
index 6989c16aec2bf8c1aee3fbb277bbb9627d11f70f..b58d6302521f4d651359715331e83a5a416583a0 100644 (file)
--- a/drivers/iio/adc/men_z188_adc.c
+++ b/drivers/iio/adc/men_z188_adc.c
@@ -121,8 +121,8 @@ static int men_z188_probe(struct mcb_device *dev,
        indio_dev->num_channels = ARRAY_SIZE(z188_adc_iio_channels);
 
        mem = mcb_request_mem(dev, "z188-adc");
-       if (!mem)
-               return -ENOMEM;
+       if (IS_ERR(mem))
+               return PTR_ERR(mem);
 
        adc->base = ioremap(mem->start, resource_size(mem));
        if (adc->base == NULL)