clocksource/drivers/gpx: Remove redundant casts

In the function gxp_timer_init, the 'int' type cast in front of the
PTR_ERR() macro is redundant, thus remove it.

Signed-off-by: Tang Bin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>

Author: Tang Bin

drivers/clocksource/timer-gxp.c

@@ -85,7 +85,7 @@ static int __init gxp_timer_init(struct device_node *node)
 
 	clk = of_clk_get(node, 0);
 	if (IS_ERR(clk)) {
-		ret = (int)PTR_ERR(clk);
+		ret = PTR_ERR(clk);
 		pr_err("%pOFn clock not found: %d\n", node, ret);
 		goto err_free;
 	}