clk: mux: remove redundant initialization of variable width

Variable width is being ininitialized with a value that is never read.
The ininitializtion is redundant and can be removed. Move the variable
to the scope it is required.

Cleans up cppcheck warning:
Variable 'width' is assigned a value that is never used.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220424182227.1364966-1-colin.i.king@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk-mux.c

@@ -157,11 +157,11 @@ struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np,
 	struct clk_mux *mux;
 	struct clk_hw *hw;
 	struct clk_init_data init = {};
-	u8 width = 0;
 	int ret = -EINVAL;
 
 	if (clk_mux_flags & CLK_MUX_HIWORD_MASK) {
-		width = fls(mask) - ffs(mask) + 1;
+		u8 width = fls(mask) - ffs(mask) + 1;
+
 		if (width + shift > 16) {
 			pr_err("mux value exceeds LOWORD field\n");
 			return ERR_PTR(-EINVAL);