iget: use iget_failed() in GFS2

Use iget_failed() in GFS2 to kill a failed inode.

Signed-off-by: David Howells <[e-mail]>
Cc: Steven Whitehouse <[e-mail]>
Acked-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/gfs2/inode.c

···
 	ip->i_gl->gl_object = NULL;
 	gfs2_glock_put(ip->i_gl);
 fail:
-	iput(inode);
+	iget_failed(inode);
 	return ERR_PTR(error);
 }