Staging: iio: magnetometer: remove exceptional & on function name

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

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

- &f
+ f
// </smpl>
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/iio/magnetometer/hmc5843_core.c

@@ -554,9 +554,9 @@ static int hmc5843_init(struct hmc5843_data *data)
 
 static const struct iio_info hmc5843_info = {
 	.attrs = &hmc5843_group,
-	.read_raw = &hmc5843_read_raw,
-	.write_raw = &hmc5843_write_raw,
-	.write_raw_get_fmt = &hmc5843_write_raw_get_fmt,
+	.read_raw = hmc5843_read_raw,
+	.write_raw = hmc5843_write_raw,
+	.write_raw_get_fmt = hmc5843_write_raw_get_fmt,
 	.driver_module = THIS_MODULE,
 };