staging: rtl8723au: Remove unnecessary else following return

Remove unnecessary else when there is a return statement in the
corresponding if block.
Coccinelle patch used:

@rule1@
expression e1;
@@

	if (e1) { ... return ...; }
-       else{
	        ...
-            }

@rule2@
expression e2;
statement s1;
@@

	if(e2) { ... return ...; }
-       else
		s1

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/hal_com.c

@@ -328,7 +328,7 @@ int c2h_evt_read23a(struct rtw_adapter *adapter, u8 *buf)
 
 	if (trigger == C2H_EVT_HOST_CLOSE)
 		goto exit;	/* Not ready */
-	else if (trigger != C2H_EVT_FW_CLOSE)
+	if (trigger != C2H_EVT_FW_CLOSE)
 		goto clear_evt;	/* Not a valid value */
 
 	c2h_evt = (struct c2h_evt_hdr *)buf;