pwm: meson: Remove redundant assignment to variable fin_freq

[ Upstream commit 437fb760 ]

The variable fin_freq is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 87a2cbf0 ("pwm: meson: fix handling of period/duty if greater than UINT_MAX")
Signed-off-by: Sasha Levin <sashal@kernel.org>