device property: Fix fwnode_graph_devcon_match() fwnode leak

stable inclusion
from stable-v5.10.94
commit 6c1e3d8b1bff4c861c9ebe2d37a5b296fc7ee207
bugzilla: https://gitee.com/openeuler/kernel/issues/I531X9

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6c1e3d8b1bff4c861c9ebe2d37a5b296fc7ee207

--------------------------------

commit 4a7f4110 upstream.

For each endpoint it encounters, fwnode_graph_devcon_match() checks
whether the endpoint's remote port parent device is available. If it is
not, it ignores the endpoint but does not put the reference to the remote
endpoint port parent fwnode. For available devices the fwnode handle
reference is put as expected.

Put the reference for unavailable devices now.

Fixes: 637e9e52 ("device connection: Find device connections also from device graphs")
Cc: 5.1+ <stable@vger.kernel.org> # 5.1+
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>

drivers/base/property.c

@@ -1195,8 +1195,10 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
 
 	fwnode_graph_for_each_endpoint(fwnode, ep) {
 		node = fwnode_graph_get_remote_port_parent(ep);
-		if (!fwnode_device_is_available(node))
+		if (!fwnode_device_is_available(node)) {
+			fwnode_handle_put(node);
 			continue;
+		}
 
 		ret = match(node, con_id, data);
 		fwnode_handle_put(node);