[PATCH] drm/i915: Free OA config IDs on reallocation failure

[Emre Cecanpunar]

When the OA configuration list grows while it is being collected, the
array is resized and the query is retried. krealloc() leaves the original
allocation untouched on failure, so returning directly leaks the array.

Free the original allocation before returning the error.

Fixes: 4f6ccc74a85c ("drm/i915: add support for perf configuration queries")
Signed-off-by: Emre Cecanpunar <emreleno@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_query.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 0c55fb6e9727..11157fb14db3 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -403,8 +403,10 @@ static int query_perf_config_list(struct drm_i915_private *i915,
 		ids = krealloc(oa_config_ids,
 			       n_configs * sizeof(*oa_config_ids),
 			       GFP_KERNEL);
-		if (!ids)
+		if (!ids) {
+			kfree(oa_config_ids);
 			return -ENOMEM;
+		}
 
 		alloc = fetch_and_zero(&n_configs);
 
-- 
2.55.0