gpio: altera-a10sr: Trivial coding style fix
Change the coding style to make it does error checking first. This also fixes checkpatch warning about line over 80 characters. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested by: Thor Thayer <thor.thayer@linux.intel.com> Reviewed by: Thor Thayer <thor.thayer@linux.intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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