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>

drivers/clk/ics8n3qv01.c

@@ -82,7 +82,6 @@ static int ics8n3qv01_calc_parameters(uint fout, uint *_mint, uint *_mfrac,
 	uint n, foutiic, fvcoiic, mint;
 	u64 mfrac;
 
-	n = (2215000000U + fout / 2) / fout;
 	if (fout < 417000000U)
 		n = 2 * ((2215000000U / 2 + fout / 2) / fout);
 	else