soc: qcom: smp2p: Fix fallback to qcom,ipc parse

mainline inclusion
from mainline-v6.16-rc1
commit 421777a
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=421777a02bbd9cdabe0ae05a69ee06253150589d

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

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()")
Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
Reviewed-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Tested-by: Stephan Gerhold <stephan.gerhold@linaro.org> # msm8939
Link: https://lore.kernel.org/r/20250421-fix-qcom-smd-v1-2-574d071d3f27@mainlining.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
(cherry picked from commit 421777a)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: barni2000

drivers/soc/qcom/smp2p.c

@@ -559,7 +559,7 @@ static int qcom_smp2p_probe(struct platform_device *pdev)
 	smp2p->mbox_client.knows_txdone = true;
 	smp2p->mbox_chan = mbox_request_channel(&smp2p->mbox_client, 0);
 	if (IS_ERR(smp2p->mbox_chan)) {
-		if (PTR_ERR(smp2p->mbox_chan) != -ENODEV)
+		if (PTR_ERR(smp2p->mbox_chan) != -ENOENT)
 			return PTR_ERR(smp2p->mbox_chan);
 
 		smp2p->mbox_chan = NULL;