[PATCH] media: qcom: camss: fix error path on configuration of power domains

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There is a chance to meet runtime issues during configuration of CAMSS
power domains, because on the error path dev_pm_domain_detach() is
unexpectedly called with NULL or error pointer.

Fixes: 23aa4f0cd327 ("media: qcom: camss: Move VFE power-domain specifics into vfe.c")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@xxxxxxxxxx>
---
 drivers/media/platform/qcom/camss/camss.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 51b1d3550421..aa894be1461d 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -2130,10 +2130,8 @@ static int camss_configure_pd(struct camss *camss)
 	if (camss->res->pd_name) {
 		camss->genpd = dev_pm_domain_attach_by_name(camss->dev,
 							    camss->res->pd_name);
-		if (IS_ERR(camss->genpd)) {
-			ret = PTR_ERR(camss->genpd);
-			goto fail_pm;
-		}
+		if (IS_ERR(camss->genpd))
+			return PTR_ERR(camss->genpd);
 	}
 
 	if (!camss->genpd) {
@@ -2143,14 +2141,13 @@ static int camss_configure_pd(struct camss *camss)
 		 */
 		camss->genpd = dev_pm_domain_attach_by_id(camss->dev,
 							  camss->genpd_num - 1);
+		if (IS_ERR(camss->genpd))
+			return PTR_ERR(camss->genpd);
 	}
-	if (IS_ERR_OR_NULL(camss->genpd)) {
-		if (!camss->genpd)
-			ret = -ENODEV;
-		else
-			ret = PTR_ERR(camss->genpd);
-		goto fail_pm;
-	}
+
+	if (!camss->genpd)
+		return -ENODEV;
+
 	camss->genpd_link = device_link_add(camss->dev, camss->genpd,
 					    DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME |
 					    DL_FLAG_RPM_ACTIVE);
-- 
2.45.2





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