clk: ICS8N3QV01 remove superfluous code

Do not calculate a unused value of n which is overwritten in both branches
of the subsequent if statement.

Identified by cppcheck.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
1 file changed