net: rfkill: fixes the warning with gcc-7.2 build

when used the arm-linux-gnueabihf-gcc-7.2.1, had the below
warning information:
net/rfkill/rfkill-bt.c:711:5: warning: this ‘if’ clause does not
guard... [-Wmisleading-indentation] error, forbidden warning

Change-Id: I7834078bb731e1115f6e8328a56158b0d9f2991e
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Author: Caesar-github

net/rfkill/rfkill-bt.c

@@ -709,7 +709,7 @@ static int rfkill_rk_remove(struct platform_device *pdev)
         gpio_free(rfkill->pdata->reset_gpio.io);
 
     if (gpio_is_valid(rfkill->pdata->poweron_gpio.io))
-        gpio_free(rfkill->pdata->poweron_gpio.io);
+		gpio_free(rfkill->pdata->poweron_gpio.io);
 	clk_disable_unprepare(rfkill->pdata->ext_clk);
     g_rfkill = NULL;