Input: zforce_ts - use dev_err_probe() where appropriate

Use dev_err_probe() helper to log deferrals in the devices_deferred
debugfs file and avoid extra messages in the logs.

Also rename "ret" variables holding error codes only to "error".

Tested-by: Andreas Kemnade <[email protected]> # Tolino Shine2HD
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: dtor