fs/ntfs3: Replace inode_trylock with inode_lock

The issue was detected due to xfstest 465 failing.

Fixes: 4342306f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/file.c

@@ -299,10 +299,7 @@ static int ntfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 		}
 
 		if (ni->i_valid < to) {
-			if (!inode_trylock(inode)) {
-				err = -EAGAIN;
-				goto out;
-			}
+			inode_lock(inode);
 			err = ntfs_extend_initialized_size(file, ni,
 							   ni->i_valid, to);
 			inode_unlock(inode);