habanalabs: run error handling if scrub_device_mem fails after reset

If device memory scrubbing from hl_device_reset() fails, we return with
an error code but not perform error handling code.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>