drm/tegra: return -EFAULT if copy_from_user() fails
drm/tegra: return -EFAULT if copy_from_user() fails

copy_from_user() returns the number of bytes remaining if it fails, but
we want to return -EFAULT here.

Signed-off-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Signed-off-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>

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