Multiplications for the size determination of memory allocations
indicated that array data structures should be processed.
Thus use the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Reviewed-by: NSinclair Yeh <syeh@vmware.com>
Signed-off-by: NSinclair Yeh <syeh@vmware.com>