[PATCH] drm/xe: Fix memory leak on xe_alloc_pf_queue failure

[Nirmoy Das]

Free up previously allocated pf_queue[i].data on error.

Fixes: 3338e4f90c14 ("drm/xe: Use topology to determine page fault queue size")
Cc: Matthew Auld <matthew.auld at intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Stuart Summers <stuart.summers at intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/xe/xe_gt_pagefault.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_gt_pagefault.c b/drivers/gpu/drm/xe/xe_gt_pagefault.c
index 0be4687bfc20..c19944eed5bd 100644
--- a/drivers/gpu/drm/xe/xe_gt_pagefault.c
+++ b/drivers/gpu/drm/xe/xe_gt_pagefault.c
@@ -437,9 +437,13 @@ int xe_gt_pagefault_init(struct xe_gt *gt)
 
 	for (i = 0; i < NUM_PF_QUEUE; ++i) {
 		ret = xe_alloc_pf_queue(gt, &gt->usm.pf_queue[i]);
-		if (ret)
+		if (ret) {
+			while (i-- > 0)
+				kfree(gt->usm.pf_queue[i].data);
 			return ret;
+		}
 	}
+
 	for (i = 0; i < NUM_ACC_QUEUE; ++i) {
 		gt->usm.acc_queue[i].gt = gt;
 		spin_lock_init(&gt->usm.acc_queue[i].lock);
-- 
2.42.0