i2c: acpi: put device when verifying client fails

i2c_verify_client() can fail, so we need to put the device when that
happens.

Fixes: 525e6fa ("i2c / ACPI: add support for ACPI reconfigure notifications")
Reported-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Acked-by: Mika Westerberg <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>

Author: Wolfram Sang

drivers/i2c/i2c-core-acpi.c

@@ -394,9 +394,17 @@ EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle);
 static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev)
 {
 	struct device *dev;
+	struct i2c_client *client;
 
 	dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev);
-	return dev ? i2c_verify_client(dev) : NULL;
+	if (!dev)
+		return NULL;
+
+	client = i2c_verify_client(dev);
+	if (!client)
+		put_device(dev);
+
+	return client;
 }
 
 static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value,