[XFS] Fix sparse warning in xlog_recover_do_efd_trans.

Sparse trips over the locking order in xlog_recover_do_efd_trans() when
xfs_trans_delete_ail() drops the ail lock. Because the unlock is
conditional, we need to either annotate with a "fake unlock" or change the
structure of the code so sparse thinks the function always unlocks.

Reordering the code makes it simpler, so do that.

SGI-PV: 972755
SGI-Modid: xfs-linux-melb:xfs-kern:30003a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>

fs/xfs/xfs_log_recover.c

@@ -2733,21 +2733,13 @@ xlog_recover_do_efd_trans(
 				 * AIL lock.
 				 */
 				xfs_trans_delete_ail(mp, lip);
-				break;
+				xfs_efi_item_free(efip);
+				return;
 			}
 		}
 		lip = xfs_trans_next_ail(mp, lip, &gen, NULL);
 	}
-
-	/*
-	 * If we found it, then free it up.  If it wasn't there, it
-	 * must have been overwritten in the log.  Oh well.
-	 */
-	if (lip != NULL) {
-		xfs_efi_item_free(efip);
-	} else {
-		spin_unlock(&mp->m_ail_lock);
-	}
+	spin_unlock(&mp->m_ail_lock);
 }
 
 /*