usb: gadget: udc: Remove unnecessary NULL values

The NULL initialization of the pointers assigned by kzalloc() first is
not necessary, because if the kzalloc() failed, the pointers will be
assigned NULL, otherwise it works as usual. so remove it.

Signed-off-by: Ruan Jinjie <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/gadget/udc/fsl_udc_core.c

···
 static struct usb_request *
 fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
 {
-	struct fsl_req *req = NULL;
+	struct fsl_req *req;
 
 	req = kzalloc(sizeof *req, gfp_flags);
 	if (!req)

drivers/usb/gadget/udc/mv_u3d_core.c

···
 static struct usb_request *
 mv_u3d_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
 {
-	struct mv_u3d_req *req = NULL;
+	struct mv_u3d_req *req;
 
 	req = kzalloc(sizeof *req, gfp_flags);
 	if (!req)
···
 
 static int mv_u3d_probe(struct platform_device *dev)
 {
-	struct mv_u3d *u3d = NULL;
+	struct mv_u3d *u3d;
 	struct mv_usb_platform_data *pdata = dev_get_platdata(&dev->dev);
 	int retval = 0;
 	struct resource *r;

drivers/usb/gadget/udc/mv_udc_core.c

···
 static struct usb_request *
 mv_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
 {
-	struct mv_req *req = NULL;
+	struct mv_req *req;
 
 	req = kzalloc(sizeof *req, gfp_flags);
 	if (!req)