drm/i915: Fix missing variable initilization

Need to initialize the variable wait to false.

Signed-off-by: Syam Sidhardhan <[e-mail]>
Signed-off-by: Daniel Vetter <[e-mail]>

drivers/gpu/drm/i915/intel_ddi.c

···
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
 	struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 	enum port port = intel_dig_port->port;
-	bool wait;
 	uint32_t val;
+	bool wait = false;
 
 	if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
 		val = I915_READ(DDI_BUF_CTL(port));