drm/i915/selftests: Fix uninitialized variable

Static code analysis tool identified struct lrc_timestamp data as being
uninitialized and then data.ce[] is being checked for NULL/negative
value in the error path. Initializing data variable fixes the issue.

Cc: Matt Roper <[email protected]>
Cc: Chris Wilson <[email protected]>
Signed-off-by: Aditya Swarup <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: aditya23788

drivers/gpu/drm/i915/gt/selftest_lrc.c

@@ -4723,9 +4723,9 @@ static int __lrc_timestamp(const struct lrc_timestamp *arg, bool preempt)
 
 static int live_lrc_timestamp(void *arg)
 {
+	struct lrc_timestamp data = {};
 	struct intel_gt *gt = arg;
 	enum intel_engine_id id;
-	struct lrc_timestamp data;
 	const u32 poison[] = {
 		0,
 		S32_MAX,