drm/ttm: Fix memory leak in ttm_agp_backend.c
drm/ttm: Fix memory leak in ttm_agp_backend.c

This patch fix a memory leak found by cppcheck.
[drivers/gpu/drm/ttm/ttm_agp_backend.c:129]:
(error) Memory leak: agp_be

Signed-off-by: Masanari Iida <f31bb8ac2957d045575b3081e813605474613a21@gmail.com>
Reviewed-by: Thomas Hellstrom <a26490dfbee4be3d38287ad6448444504f58193c@vmware.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs