sata: ahsata: Fix resource leak

Fix coverity issue CID 3606684: Resource leak (RESOURCE_LEAK)
leaked_storage: Variable uc_priv going out of scope leaks the storage it points to

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/ata/dwc_ahsata.c

@@ -847,6 +847,9 @@ static int ahci_init_one(int pdev)
 	struct ahci_uc_priv *uc_priv = NULL;
 
 	uc_priv = malloc(sizeof(struct ahci_uc_priv));
+	if (!uc_priv)
+		return -ENOMEM;
+
 	memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
 	uc_priv->dev = pdev;
 
@@ -871,6 +874,8 @@ static int ahci_init_one(int pdev)
 	return 0;
 
 err_out:
+	if (uc_priv)
+		free(uc_priv);
 	return rc;
 }