[PATCH] drm/xe/guc: Fix deference after check

[Everest K.C.]

The `if (!snapshot->copy)` evaluates to True only when `snapshot->copy`
is Null. Thus, derefrencing `snapshot->copy` inside this if block is
equivalent to Null pointer derefrencing.
The `if` condition is now changed to evaluate to true only when
`snapshot->copy` is not Null.
This issue was reported by Coverity Scan.

Signed-off-by: Everest K.C. <everestkc@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/xe/xe_guc_log.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_guc_log.c b/drivers/gpu/drm/xe/xe_guc_log.c
index 7fbc56cceaba..4e1a5e8ba1e3 100644
--- a/drivers/gpu/drm/xe/xe_guc_log.c
+++ b/drivers/gpu/drm/xe/xe_guc_log.c
@@ -122,7 +122,7 @@ void xe_guc_log_snapshot_free(struct xe_guc_log_snapshot *snapshot)
 	if (!snapshot)
 		return;
 
-	if (!snapshot->copy) {
+	if (snapshot->copy) {
 		for (i = 0; i < snapshot->num_chunks; i++)
 			kfree(snapshot->copy[i]);
 		kfree(snapshot->copy);
-- 
2.43.0