gfs2: simplify the logic in gfs2_evict_inode

Now that we've factored out the deleted and undeleted dinode cases
in gfs2_evict_inode, we can greatly simplify the logic. Now the
function is easy to read and understand.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/super.c

@@ -1496,16 +1496,11 @@ static void gfs2_evict_inode(struct inode *inode)
 	ret = evict_should_delete(inode, &gh);
 	if (ret == SHOULD_DEFER_EVICTION)
 		goto out;
-	if (ret == SHOULD_NOT_DELETE_DINODE)
-		goto out_truncate;
-
+	if (ret == SHOULD_DELETE_DINODE)
 		ret = evict_unlinked_inode(inode);
-	goto out_unlock;
-
-out_truncate:
+	else
 		ret = evict_linked_inode(inode);
 
-out_unlock:
 	if (gfs2_rs_active(&ip->i_res))
 		gfs2_rs_deltree(&ip->i_res);