[PATCH 03/21] ata: libahci_platform: Explicitly set rc on devres_alloc failure

[Serge Semin <Sergey.Semin@baikalelectronics.ru>]

It's better for readability and maintainability to explicitly assign an
error number to the variable used then as a return value from the method
on the cleanup-on-error path. So adding new code in the method we won't
have to think whether the overridden rc-variable is set afterward in case
of an error. Saving one line of code doesn't worth it especially seeing
the rest of the ahci_platform_get_resources() function errors handling
blocks do explicitly write errno to rc.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
 drivers/ata/libahci_platform.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index 18296443ccba..1bd2f1686239 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -389,7 +389,7 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 	struct ahci_host_priv *hpriv;
 	struct clk *clk;
 	struct device_node *child;
-	int i, enabled_ports = 0, rc = -ENOMEM, child_nodes;
+	int i, enabled_ports = 0, rc = 0, child_nodes;
 	u32 mask_port_map = 0;
 
 	if (!devres_open_group(dev, NULL, GFP_KERNEL))
@@ -397,8 +397,10 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 
 	hpriv = devres_alloc(ahci_platform_put_resources, sizeof(*hpriv),
 			     GFP_KERNEL);
-	if (!hpriv)
+	if (!hpriv) {
+		rc = -ENOMEM;
 		goto err_out;
+	}
 
 	devres_add(dev, hpriv);
 
-- 
2.35.1