media: staging: atomisp: sh_css_calloc shall return a pointer to the allocated space

The calloc function returns either a null pointer or a pointer to the
allocated space. Add the second case that is missed.

Fixes: da22013 ("atomisp: remove indirection from sh_css_malloc")
Signed-off-by: Sergei A. Trusov <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

Author: STrusov

drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css.c

@@ -1939,6 +1939,7 @@ void *sh_css_calloc(size_t N, size_t size)
 		p = sh_css_malloc(N*size);
 		if (p)
 			memset(p, 0, size);
+		return p;
 	}
 	return NULL;
 }