[PATCH] input: touchscreen: mxs-lradc: Use devm_ioremap_resource()

In case of error devm_ioremap() returns NULL pointer not ERR_PTR().

The iores NULL check is also missing.

Fix both problems by using devm_ioremap_resource() variant instead.

Fixes: d81ca730e3e4 ("input: touchscreen: mxs-lradc: Add support for touchscreen")
Signed-off-by: Fabio Estevam <redacted>
---
 drivers/input/touchscreen/mxs-lradc-ts.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/mxs-lradc-ts.c b/drivers/input/touchscreen/mxs-lradc-ts.c
index 58c016c..0f8c9e7 100644
--- a/drivers/input/touchscreen/mxs-lradc-ts.c
+++ b/drivers/input/touchscreen/mxs-lradc-ts.c

@@ -630,7 +630,7 @@ static int mxs_lradc_ts_probe(struct platform_device *pdev)
        spin_lock_init(&ts->lock);

        iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       ts->base = devm_ioremap(dev, iores->start, resource_size(iores));
+       ts->base = devm_ioremap_resource(dev, iores);
        if (IS_ERR(ts->base))
                return PTR_ERR(ts->base);