vfs: remove extraneous NULL d_inode check from do_filp_open

We can't get to this point unless it's a valid pointer.

Signed-off-by: Jeff Layton <[e-mail]>
Cc: Al Viro <[e-mail]>
Cc: Christoph Hellwig <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Al Viro <[e-mail]>

fs/namei.c

···
 
 	path_to_nameidata(&path, &nd);
 	error = -EISDIR;
-	if (path.dentry->d_inode && S_ISDIR(path.dentry->d_inode->i_mode))
+	if (S_ISDIR(path.dentry->d_inode->i_mode))
 		goto exit;
 ok:
 	/*