fs/9p: delete unnnecessary condition

We already know that "retval" is negative, so there is no need to check
again.  Also the statement is not indented far enough.  Delete it.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes: 43c36a5 ("Revert "fs/9p: Refresh metadata in d_revalidate for uncached mode too"")
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Message-ID: <aPtiSJl8EwSfVvqN@stanley.mountain>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

Author: Dan Carpenter

fs/9p/vfs_dentry.c

@@ -109,7 +109,6 @@ static int __v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 			p9_debug(P9_DEBUG_VFS,
 				"refresh inode: dentry = %pd (%p), got error %pe\n",
 				dentry, dentry, ERR_PTR(retval));
-		if (retval < 0)
 			return retval;
 		}
 	}