staging: rtl8723bs: hal: remove redundant variable n

The variable n is being assigned a value that is never read inside
an if statement block, the assignment is redundant and can be removed.
With this removed, n is only being used for a constant loop bounds
check, so replace n with that value instead and remove n completely.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>

Link: https://lore.kernel.org/r/20190905152227.4610-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c

@@ -502,7 +502,7 @@ exit:
  */
 void rtl8723bs_free_recv_priv(struct adapter *padapter)
 {
-	u32 i, n;
+	u32 i;
 	struct recv_priv *precvpriv;
 	struct recv_buf *precvbuf;
 
@@ -514,9 +514,8 @@ void rtl8723bs_free_recv_priv(struct adapter *padapter)
 	/* 3 2. free all recv buffers */
 	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
 	if (precvbuf) {
-		n = NR_RECVBUFF;
 		precvpriv->free_recv_buf_queue_cnt = 0;
-		for (i = 0; i < n ; i++) {
+		for (i = 0; i < NR_RECVBUFF; i++) {
 			list_del_init(&precvbuf->list);
 			rtw_os_recvbuf_resource_free(padapter, precvbuf);
 			precvbuf++;
@@ -525,7 +524,6 @@ void rtl8723bs_free_recv_priv(struct adapter *padapter)
 	}
 
 	if (precvpriv->pallocated_recv_buf) {
-		n = NR_RECVBUFF * sizeof(struct recv_buf) + 4;
 		kfree(precvpriv->pallocated_recv_buf);
 		precvpriv->pallocated_recv_buf = NULL;
 	}