ipmi_si: Drop redundant check before calling put_device()

put_device() is NULL aware, drop redundant check before calling it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Message-Id: <20210402174334.13466-10-andriy.shevchenko@linux.intel.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_si_hotmod.c

@@ -223,8 +223,7 @@ static int hotmod_handler(const char *val, const struct kernel_param *kp)
 				if (strcmp(pdev->name, "hotmod-ipmi-si") == 0)
 					platform_device_unregister(pdev);
 			}
-			if (dev)
-				put_device(dev);
+			put_device(dev);
 		}
 	}
 	rv = strlen(val);