iio: frequency: Remove unnecessary braces around single statement block

This patch fixes the following checkpatch.pl warning:
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c
index 2b301eb..10a0dfc 100644
--- a/drivers/iio/frequency/adf4350.c
+++ b/drivers/iio/frequency/adf4350.c
@@ -611,9 +611,8 @@
 	if (st->clk)
 		clk_disable_unprepare(st->clk);
 
-	if (!IS_ERR(reg)) {
+	if (!IS_ERR(reg))
 		regulator_disable(reg);
-	}
 
 	return 0;
 }