habanalabs: return -EFAULT on copy_to_user error

If copy_to_user failed in info ioctl, we always return -EFAULT so the
user will know there was an error.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>