clk: imx: remove redundant re-assignment of pll->base

clk: imx: remove redundant re-assignment of pll->base

There are two identical assignments of pll->base to the same value,
the second assignment is redundant and can be removed.

Cleans up cppcheck warning:
drivers/clk/imx/clk-sscg-pll.c:528:12: style: Variable 'pll->base' is
reassigned a value before the old one has been used. [redundantAssignment]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220303090508.1125175-1-colin.i.king@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>