drm/i915: Nuke pointless variable

No point in assigning the function return value to a local
variable if we're just going to use it the one time.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200630215601.28557-13-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>

drivers/gpu/drm/i915/display/intel_hotplug.c

@@ -482,15 +482,14 @@ void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
 	 * only the one of them (DP) will have ->hpd_pulse().
 	 */
 	for_each_intel_encoder(&dev_priv->drm, encoder) {
-		bool has_hpd_pulse = intel_encoder_has_hpd_pulse(encoder);
 		enum port port = encoder->port;
 		bool long_hpd;
 
 		pin = encoder->hpd_pin;
 		if (!(BIT(pin) & pin_mask))
 			continue;
 
-		if (!has_hpd_pulse)
+		if (!intel_encoder_has_hpd_pulse(encoder))
 			continue;
 
 		long_hpd = long_mask & BIT(pin);