ocfs2: delete unnecessary checks before three function calls

kfree(), ocfs2_free_path() and __ocfs2_free_slot_info() test whether their
argument is NULL and then return immediately.  Thus the test around their
calls is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/alloc.c

@@ -3453,8 +3453,7 @@ static int ocfs2_merge_rec_right(struct ocfs2_path *left_path,
 					   subtree_index);
 	}
 out:
-	if (right_path)
-		ocfs2_free_path(right_path);
+	ocfs2_free_path(right_path);
 	return ret;
 }
 
@@ -3647,8 +3646,7 @@ static int ocfs2_merge_rec_left(struct ocfs2_path *right_path,
 						   right_path, subtree_index);
 	}
 out:
-	if (left_path)
-		ocfs2_free_path(left_path);
+	ocfs2_free_path(left_path);
 	return ret;
 }
 
@@ -4431,11 +4429,8 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
 	}
 
 out:
-	if (left_path)
-		ocfs2_free_path(left_path);
-	if (right_path)
-		ocfs2_free_path(right_path);
-
+	ocfs2_free_path(left_path);
+	ocfs2_free_path(right_path);
 	return ret;
 }
 
@@ -6996,9 +6991,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
 out:
 	if (data_ac)
 		ocfs2_free_alloc_context(data_ac);
-	if (pages)
-		kfree(pages);
-
+	kfree(pages);
 	return ret;
 }
 

fs/ocfs2/slot_map.c

@@ -452,7 +452,7 @@ int ocfs2_init_slot_info(struct ocfs2_super *osb)
 
 	osb->slot_info = (struct ocfs2_slot_info *)si;
 bail:
-	if (status < 0 && si)
+	if (status < 0)
 		__ocfs2_free_slot_info(si);
 
 	return status;

fs/ocfs2/stack_user.c

@@ -1063,7 +1063,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
 	}
 
 out:
-	if (rc && lc)
+	if (rc)
 		kfree(lc);
 	return rc;
 }