audit: remove unnecessary NULL ptr checks from do_path_lookup

As best I can tell, whenever retval == 0, nd->path.dentry and nd->inode
are also non-NULL. Eliminate those checks and the superfluous
audit_context check.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index c1f18e4..f04ce11 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1972,12 +1972,8 @@
 	if (unlikely(retval == -ESTALE))
 		retval = path_lookupat(dfd, name, flags | LOOKUP_REVAL, nd);
 
-	if (likely(!retval)) {
-		if (unlikely(!audit_dummy_context())) {
-			if (nd->path.dentry && nd->inode)
-				audit_inode(name, nd->path.dentry);
-		}
-	}
+	if (likely(!retval))
+		audit_inode(name, nd->path.dentry);
 	return retval;
 }