mfd: Fix omap_usbhs_alloc_children error handling

1. Return proper error if omap_usbhs_alloc_child fails
2. In the case of goto err_ehci, we should call platform_device_unregister(ehci)
   instead of platform_device_put(ehci) because we have already added the
   platform device to device hierarchy.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Tested-by: Keshava Munegowda <keshava_mgowda@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 55c5d4732f5f..1717144fe7f4 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -281,6 +281,7 @@ static int omap_usbhs_alloc_children(struct platform_device *pdev)
 
         if (!ehci) {
                 dev_err(dev, "omap_usbhs_alloc_child failed\n");
+                ret = -ENOMEM;
                 goto err_end;
         }
 
@@ -304,13 +305,14 @@ static int omap_usbhs_alloc_children(struct platform_device *pdev)
                 sizeof(*ohci_data), dev);
         if (!ohci) {
                 dev_err(dev, "omap_usbhs_alloc_child failed\n");
+                ret = -ENOMEM;
                 goto err_ehci;
         }
 
         return 0;
 
 err_ehci:
-        platform_device_put(ehci);
+        platform_device_unregister(ehci);
 
 err_end:
         return ret;