[PATCH] hwmon: (dme1737): Add missing null check on return from platform_get_resource

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

The call to platform_get_resource can potentially return a NULL pointer
on failure, so add this check and return -EINVAL if it fails.

Addresses-Coverity: ("Dereference null return")
Fixes: e95c237d78c0 ("hwmon: (dme1737) Add sch311x support")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 drivers/hwmon/dme1737.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index c1e4cfb40c3d..a2157872e126 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -2633,6 +2633,8 @@ static int dme1737_isa_probe(struct platform_device *pdev)
        int err;
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       if (!res)
+               return -EINVAL;
        if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
                dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
                        (unsigned short)res->start,
-- 
2.30.2