iio: accel: sca3000: replace error_ret labels by simple returns

iio: accel: sca3000: replace error_ret labels by simple returns

Replace usage of error_ret labels by returning directly when handling
errors. Cases that do a mutex unlock were not changed.

Signed-off-by: Andrew Ijano <andrew.lopes@alumni.usp.br>
Co-developed-by: Gustavo Bastos <gustavobastos@usp.br>
Signed-off-by: Gustavo Bastos <gustavobastos@usp.br>
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611194648.18133-2-andrew.lopes@alumni.usp.br
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>