usb: ehci-sh: fix illegal phy_init() running when platform_data is NULL

["Shimoda, Yoshihiro" <yoshihiro.shimoda.uh@renesas.com>]

If the platform_data is not set, pdata will be uninitialized value.
Then, the phy_init() may run on illegal address.

This patch also fixes the following warning:

  CC      drivers/usb/host/ehci-hcd.o
drivers/usb/host/ehci-sh.c: In function ‘ehci_hcd_sh_probe’:
drivers/usb/host/ehci-sh.c:104: warning: ‘pdata’ may be used uninitialized in this function

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/usb/host/ehci-sh.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c
index ca819cd..e7cb392 100644
--- a/drivers/usb/host/ehci-sh.c
+++ b/drivers/usb/host/ehci-sh.c
@@ -126,8 +126,7 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
 		goto fail_create_hcd;
 	}

-	if (pdev->dev.platform_data != NULL)
-		pdata = pdev->dev.platform_data;
+	pdata = pdev->dev.platform_data;

 	/* initialize hcd */
 	hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,
-- 
1.7.1