rpmsg: qcom_smd: Fix fallback to qcom,ipc parse

mainline inclusion
from mainline-v6.18-rc1
commit 09390ed
category: bugfix
bugzilla: https://atomgit.com/openeuler/kernel/issues/8365

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=09390ed9af37ed612dd0967ff2b0d639872b8776

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

mbox_request_channel() returning value was changed in case of error.
It uses returning value of of_parse_phandle_with_args().
It is returning with -ENOENT instead of -ENODEV when no mboxes property
exists.

Fixes: 24fdd50 ("mailbox: use error ret code of of_parse_phandle_with_args()")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Tested-by: Stephan Gerhold <stephan.gerhold@linaro.org> # msm8939
Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
Link: https://lore.kernel.org/r/20250725-fix-qcom-smd-v2-1-e4e43613f874@mainlining.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
(cherry picked from commit 09390ed)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Conflicts:
	drivers/rpmsg/qcom_smd.c

Author: barni2000

drivers/rpmsg/qcom_smd.c

@@ -1368,7 +1368,7 @@ static int qcom_smd_parse_edge(struct device *dev,
 	edge->mbox_client.knows_txdone = true;
 	edge->mbox_chan = mbox_request_channel(&edge->mbox_client, 0);
 	if (IS_ERR(edge->mbox_chan)) {
-		if (PTR_ERR(edge->mbox_chan) != -ENODEV) {
+		if (PTR_ERR(edge->mbox_chan) != -ENOENT) {
 			ret = PTR_ERR(edge->mbox_chan);
 			goto put_node;
 		}