drivers/rtc/rtc-r9701.c: avoid second call to rtc_valid_tm()

r9701_get_datetime() calls rtc_valid_tm() and returns the value returned
by rtc_valid_tm(), which can be used in the `if', so calling
rtc_valid_tm() a second time is not required.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Andreas Dumberger <andreas.dumberger@tqs.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c
index 33b6ba0..e6c34c0 100644
--- a/drivers/rtc/rtc-r9701.c
+++ b/drivers/rtc/rtc-r9701.c
@@ -138,8 +138,7 @@
 	 * contain invalid values. If so, try to write a default date:
 	 * 2000/1/1 00:00:00
 	 */
-	r9701_get_datetime(&spi->dev, &dt);
-	if (rtc_valid_tm(&dt)) {
+	if (r9701_get_datetime(&spi->dev, &dt)) {
 		dev_info(&spi->dev, "trying to repair invalid date/time\n");
 		dt.tm_sec  = 0;
 		dt.tm_min  = 0;