staging: r8188eu: remove unnecessary parentheses

Remove unnecessary parentheses around a variable to improve
readability.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-9-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_ieee80211.c

@@ -1038,7 +1038,7 @@ void rtw_macaddr_cfg(u8 *mac_addr)
 		DBG_88E("MAC Address from efuse error, assign random one !!!\n");
 	}
 
-	DBG_88E("rtw_macaddr_cfg MAC Address  = %pM\n", (mac_addr));
+	DBG_88E("rtw_macaddr_cfg MAC Address  = %pM\n", mac_addr);
 }
 
 void dump_ies(u8 *buf, u32 buf_len)