ARM: omap1: remove redundant variables err

Return value directly from platform_device_register()
instead of getting value from redundant variable err.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jinpeng Cui <cui.jinpeng2@zte.com.cn>
Message-Id: <20220830142136.299373-1-cui.jinpeng2@zte.com.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Author: Jinpeng Cui

arch/arm/mach-omap1/board-ams-delta.c

@@ -822,8 +822,6 @@ static int __init modem_nreset_init(void)
  */
 static int __init ams_delta_modem_init(void)
 {
-	int err;
-
 	if (!machine_is_ams_delta())
 		return -ENODEV;
 
@@ -832,9 +830,7 @@ static int __init ams_delta_modem_init(void)
 	/* Initialize the modem_nreset regulator consumer before use */
 	modem_priv.regulator = ERR_PTR(-ENODEV);
 
-	err = platform_device_register(&ams_delta_modem_device);
-
-	return err;
+	return platform_device_register(&ams_delta_modem_device);
 }
 arch_initcall_sync(ams_delta_modem_init);