Fix linode I/O in state property (#15010)

* Fix linode I/O in state property

* Move update of all attrs to update

homeassistant/components/binary_sensor/linode.py

@@ -52,19 +52,18 @@ class LinodeBinarySensor(BinarySensorDevice):
         self._node_id = node_id
         self._state = None
         self.data = None
+        self._attrs = {}
+        self._name = None
 
     @property
     def name(self):
         """Return the name of the sensor."""
-        if self.data is not None:
-            return self.data.label
+        return self._name
 
     @property
     def is_on(self):
         """Return true if the binary sensor is on."""
-        if self.data is not None:
-            return self.data.status == 'running'
-        return False
+        return self._state
 
     @property
     def device_class(self):
@@ -74,8 +73,18 @@ class LinodeBinarySensor(BinarySensorDevice):
     @property
     def device_state_attributes(self):
         """Return the state attributes of the Linode Node."""
-        if self.data:
-            return {
+        return self._attrs
+
+    def update(self):
+        """Update state of sensor."""
+        self._linode.update()
+        if self._linode.data is not None:
+            for node in self._linode.data:
+                if node.id == self._node_id:
+                    self.data = node
+        if self.data is not None:
+            self._state = self.data.status == 'running'
+            self._attrs = {
                 ATTR_CREATED: self.data.created,
                 ATTR_NODE_ID: self.data.id,
                 ATTR_NODE_NAME: self.data.label,
@@ -85,12 +94,4 @@ class LinodeBinarySensor(BinarySensorDevice):
                 ATTR_REGION: self.data.region.country,
                 ATTR_VCPUS: self.data.specs.vcpus,
             }
-        return {}
-
-    def update(self):
-        """Update state of sensor."""
-        self._linode.update()
-        if self._linode.data is not None:
-            for node in self._linode.data:
-                if node.id == self._node_id:
-                    self.data = node
+            self._name = self.data.label