Staging:iio:Remove exceptional & on function name

Author: Bhumika Goyal <bhumirks@gmail.com>

In this file,function names are otherwise used as pointers without &.
Found using coccinelle.
// 
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// 

Signed-off-by: Bhumika Goyal 
Signed-off-by: Jonathan Cameron 
---
 drivers/staging/iio/impedance-analyzer/ad5933.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
 
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 10c43dda..d1218d8 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -558,7 +558,7 @@ out:
 }
 
 static const struct iio_info ad5933_info = {
-	.read_raw = &ad5933_read_raw,
+	.read_raw = ad5933_read_raw,
 	.attrs = &ad5933_attribute_group,
 	.driver_module = THIS_MODULE,
 };
@@ -616,9 +616,9 @@ static int ad5933_ring_postdisable(struct iio_dev *indio_dev)
 }
 
 static const struct iio_buffer_setup_ops ad5933_ring_setup_ops = {
-	.preenable = &ad5933_ring_preenable,
-	.postenable = &ad5933_ring_postenable,
-	.postdisable = &ad5933_ring_postdisable,
+	.preenable = ad5933_ring_preenable,
+	.postenable = ad5933_ring_postenable,
+	.postdisable = ad5933_ring_postdisable,
 };
 
 static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev)