tty: hvcs: simplify if-if to if-else

Use if and else instead of if(A) and if (!A) and fix a coding style.
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Link: https://lore.kernel.org/r/20220424091310.98780-1-wanjiabing@vivo.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/hvc/hvcs.c

@@ -581,10 +581,9 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
 
 	spin_unlock_irqrestore(&hvcsd->lock, flags);
 	/* This is synch -- FIXME :js: it is not! */
-	if(got)
+	if (got)
 		tty_flip_buffer_push(&hvcsd->port);
-
-	if (!got) {
+	else {
 		/* Do this _after_ the flip_buffer_push */
 		spin_lock_irqsave(&hvcsd->lock, flags);
 		vio_enable_interrupts(hvcsd->vdev);