pinctrl: allocate sizeof(*p) instead of sizeof(struct foo)

This hopefully makes it harder to take the sizeof the wrong type.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 2887897..98b89d6 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -491,7 +491,7 @@
 	p->func_selector = func_selector;
 
 	/* Now add this group selector, we may have many of them */
-	grp = kmalloc(sizeof(struct pinmux_group), GFP_KERNEL);
+	grp = kmalloc(sizeof(*grp), GFP_KERNEL);
 	if (!grp)
 		return -ENOMEM;
 	grp->group_selector = group_selector;