ARM: orion5x: ts78xx: Remove unneeded variable ret

Remove unneeded variable ret used to store return value,just return 0.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm/mach-orion5x/ts78xx-setup.c

@@ -398,7 +398,6 @@ static int ts78xx_fpga_load_devices(void)
 
 static int ts78xx_fpga_unload_devices(void)
 {
-	int ret = 0;
 
 	if (ts78xx_fpga.supports.ts_rtc.present == 1)
 		ts78xx_ts_rtc_unload();
@@ -407,7 +406,7 @@ static int ts78xx_fpga_unload_devices(void)
 	if (ts78xx_fpga.supports.ts_rng.present == 1)
 		ts78xx_ts_rng_unload();
 
-	return ret;
+	return 0;
 }
 
 static int ts78xx_fpga_load(void)