drm/i915/gvt: fix memory leak in intel_vgpu_ioctl()

The 'sparse' variable may leak when return in function
intel_vgpu_ioctl(), and this patch fix this.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
1 file changed