rtc: remove use of seq_printf return value

The seq_printf return value, because it's frequently misused,
will eventually be converted to void.

See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to
     seq_has_overflowed() and make public")

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index d948277..60232bd 100644
--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -261,7 +261,9 @@
 	if (!dev || !dev->driver)
 		return 0;
 
-	return seq_printf(seq, "name\t\t: %s\n", dev_name(dev));
+	seq_printf(seq, "name\t\t: %s\n", dev_name(dev));
+
+	return 0;
 }
 
 static irqreturn_t tegra_rtc_irq_handler(int irq, void *data)