media: pci: cobalt: Replace GFP_ATOMIC with GFP_KERNEL in cobalt_probe()

cobalt_probe() is never called in atomic context.
It calls kzalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: NJia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/pci/cobalt/cobalt-driver.c

@@ -670,7 +670,7 @@ static int cobalt_probe(struct pci_dev *pci_dev,
 	/* FIXME - module parameter arrays constrain max instances */
 	i = atomic_inc_return(&cobalt_instance) - 1;
 
-	cobalt = kzalloc(sizeof(struct cobalt), GFP_ATOMIC);
+	cobalt = kzalloc(sizeof(struct cobalt), GFP_KERNEL);
 	if (cobalt == NULL)
 		return -ENOMEM;
 	cobalt->pci_dev = pci_dev;