staging: rtl8188eu: reduce indentation level in rtw_alloc_stainfo

Remove else-arm from if-else statement. Move the else code out of the
if-else and skip it by adding goto exit to the if block. The exit label
was directly after the else-arm, so there is no change in behaviour.
Reduces indentation level and clears a line over 80 characters
checkpatch warning.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20191026121135.181897-7-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_sta_mgt.c

@@ -181,7 +181,9 @@ struct sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 					struct sta_info, list);
 	if (!psta) {
 		spin_unlock_bh(&pfree_sta_queue->lock);
-	} else {
+		goto exit;
+	}
+
 	list_del_init(&psta->list);
 	spin_unlock_bh(&pfree_sta_queue->lock);
 	_rtw_init_stainfo(psta);
@@ -243,7 +245,6 @@ struct sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 
 	/* init for the sequence number of received management frame */
 	psta->RxMgmtFrameSeqNum = 0xffff;
-	}
 
 exit:
 	return psta;