pwm: dwc: drop redundant error check

pcim_iomap_table() fails only if pcim_iomap_regions() fails. No need to
check for failure if the latter is already successful.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240219033835.11369-3-raag.jadav@intel.com


Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>