staging: rtl8723bs: hal: remove redundant assignment to variable n

The variable n is being assigned a value that is never read, the
assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190723145905.13514-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c

@@ -486,7 +486,6 @@ s32 rtl8723bs_init_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;
 	}