[PATCH 5.14 425/432] drm/amdkfd: drop process ref count when xnack disable

From: Alex Sierra <redacted>

commit d6043581e1d9d0507a8413a302db0e35c8506e0e upstream.

During svm restore pages interrupt handler, kfd_process ref count was
never dropped when xnack was disabled. Therefore, the object was never
released.

Fixes: 2383f56bbe4a ("drm/amdkfd: page table restore through svm API")
Signed-off-by: Alex Sierra <redacted>
Reviewed-by: Philip Yang <redacted>
Reviewed-by: Jonathan Kim <redacted>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -2426,7 +2426,8 @@ svm_range_restore_pages(struct amdgpu_de
 	}
 	if (!p->xnack_enabled) {
 		pr_debug("XNACK not enabled for pasid 0x%x\n", pasid);
-		return -EFAULT;
+		r = -EFAULT;
+		goto out;
 	}
 	svms = &p->svms;