drm/amdgpu: Remove useless kfree

After alloc fail, we do not need to kfree.
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

@@ -1921,7 +1921,6 @@ static int amdgpu_ras_realloc_eh_data_space(struct amdgpu_device *adev,
 	void *bps = kmalloc(align_space * sizeof(*data->bps), GFP_KERNEL);
 
 	if (!bps) {
-		kfree(bps);
 		return -ENOMEM;
 	}