phy: phy-twl4030-usb: silence an uninitialized variable warning

The "check" variable isn't necessarily initialized when we print it out
in the debugging messages.  It's a pretty haphazard affair and it
doesn't matter very much what we initialize "check" to.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/ti/phy-twl4030-usb.c

@@ -185,7 +185,7 @@ struct twl4030_usb {
 static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
 		u8 module, u8 data, u8 address)
 {
-	u8 check;
+	u8 check = 0xFF;
 
 	if ((twl_i2c_write_u8(module, data, address) >= 0) &&
 	    (twl_i2c_read_u8(module, &check, address) >= 0) &&