staging: rtl8821ae: Fix space required before the open parenthesis '('

Fix checkpatch.pl issues with space required before the open parenthesis
'(' error in base.c

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8821ae/base.c

@@ -1363,7 +1363,7 @@ void rtl_easy_concurrent_retrytimer_callback(unsigned long data)
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_priv *buddy_priv = rtlpriv->buddy_priv;
 
-	if(buddy_priv == NULL)
+	if (buddy_priv == NULL)
 		return;
 
 	rtlpriv->cfg->ops->dualmac_easy_concurrent(hw);