ext4: remove unnecessary double parentheses

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index c6ae6fa..3a5ac7c 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -899,7 +899,7 @@
 			 * take i_data_sem because we will test
 			 * i_delalloc_reserved_flag in ext4_mb_new_blocks
 			 */
-			down_read((&EXT4_I(inode)->i_data_sem));
+			down_read(&EXT4_I(inode)->i_data_sem);
 			block = ext4_new_meta_blocks(handle, inode, goal, 0,
 						     NULL, &error);
 			up_read((&EXT4_I(inode)->i_data_sem));