clk: do not initialize ret

There is no need to initialize ret.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220630151205.3935560-2-claudiu.beznea@microchip.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk.c

@@ -2189,7 +2189,7 @@ static int clk_core_set_rate_nolock(struct clk_core *core,
 {
 	struct clk_core *top, *fail_clk;
 	unsigned long rate;
-	int ret = 0;
+	int ret;
 
 	if (!core)
 		return 0;