clk: visconti: Fix uninitialized variable in printk

The "pll_clck" variable is uninitialized. The "ret" error code was
supposed to be printed instead.

Fixes: b4cbe606dc36 ("clk: visconti: Add support common clock driver and reset driver")
Signed-off-by: Dan Carpenter <[e-mail]>
Link: https://lore.kernel.org/r/20220111072529.GJ11243@kili
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/visconti/pll.c

···
 {
 	struct clk_init_data init;
 	struct visconti_pll *pll;
-	struct clk *pll_clk;
 	struct clk_hw *pll_hw_clk;
 	size_t len;
 	int ret;
···
 	pll_hw_clk = &pll->hw;
 	ret = clk_hw_register(NULL, &pll->hw);
 	if (ret) {
-		pr_err("failed to register pll clock %s : %ld\n", name, PTR_ERR(pll_clk));
+		pr_err("failed to register pll clock %s : %d\n", name, ret);
 		kfree(pll);
 		pll_hw_clk = ERR_PTR(ret);
 	}