USB: hub.c: move assignment out of if () block

We should not be doing assignments within an if () block
so fix up the code to not do this.

change was created using Coccinelle.
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Petr Mladek <pmladek@suse.cz>
CC: Peter Chen <peter.chen@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/core/hub.c

@@ -795,7 +795,8 @@ int usb_hub_clear_tt_buffer(struct urb *urb)
 	 * since each TT has "at least two" buffers that can need it (and
 	 * there can be many TTs per hub).  even if they're uncommon.
 	 */
-	if ((clear = kmalloc (sizeof *clear, GFP_ATOMIC)) == NULL) {
+	clear = kmalloc(sizeof *clear, GFP_ATOMIC);
+	if (clear == NULL) {
 		dev_err (&udev->dev, "can't save CLEAR_TT_BUFFER state\n");
 		/* FIXME recover somehow ... RESET_TT? */
 		return -ENOMEM;