thermal: qoriq: Remove unnecessary DT node is NULL check

It's impossible to use this driver outside of Device Tree, so if the
probe function is called, the dev.of_node is guaranteed to not be NULL
and guarding against that is pointless. Drop it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/qoriq_thermal.c

@@ -193,11 +193,6 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
 	struct qoriq_tmu_data *data;
 	struct device_node *np = pdev->dev.of_node;
 
-	if (!np) {
-		dev_err(&pdev->dev, "Device OF-Node is NULL");
-		return -ENODEV;
-	}
-
 	data = devm_kzalloc(&pdev->dev, sizeof(struct qoriq_tmu_data),
 			    GFP_KERNEL);
 	if (!data)