[PATCH] drm/amdgpu: check return value of xa_store()

[Salah Triki]

xa_store() may fail so check its return value and if error occurred free
numa_info and return NULL.

Signed-off-by: Salah Triki <salah.tr...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 707e131f89d2..bff82ac651f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -876,7 +876,7 @@ static inline uint64_t amdgpu_acpi_get_numa_size(int nid)
 
 static struct amdgpu_numa_info *amdgpu_acpi_get_numa_info(uint32_t pxm)
 {
-       struct amdgpu_numa_info *numa_info;
+       struct amdgpu_numa_info *numa_info, *old;
        int nid;
 
        numa_info = xa_load(&numa_info_xa, pxm);
@@ -898,7 +898,11 @@ static struct amdgpu_numa_info 
*amdgpu_acpi_get_numa_info(uint32_t pxm)
                } else {
                        numa_info->size = amdgpu_acpi_get_numa_size(nid);
                }
-               xa_store(&numa_info_xa, numa_info->pxm, numa_info, GFP_KERNEL);
+               old  = xa_store(&numa_info_xa, numa_info->pxm, numa_info, 
GFP_KERNEL);
+               if (xa_is_err(old)) {
+                       kfree(numa_info);
+                       return NULL;
+               }
        }
 
        return numa_info;
-- 
2.43.0