rte_robot.py: rte_check_power_led: Fix typo

Signed-off-by: Filip Gołaś <filip.golas@3mdeb.com>

Author: philipanda

osfv_cli/src/osfv/rf/rte_robot.py

@@ -349,7 +349,7 @@ def rte_gpio_set(self, gpio_no, state):
     @keyword(types=None)
     def rte_check_power_led(self):
         state = self.rte.gpio_get(RTE.GPIO_PWR_LED)
-        polarity = self.dut_data.get("pwr_led", {}).get("polarity")
+        polarity = self.rte.dut_data.get("pwr_led", {}).get("polarity")
         if polarity and polarity == "active low":
             if state == "high":
                 state = "low"