The (1ull << mem_log) is never greater than mem unless mem_log++;
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
        if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
                /* Size window to exact size if power-of-two or one size up */
                if ((1ull << mem_log) != mem) {
+                       mem_log++;
                        if ((1ull << mem_log) > mem)
                                pr_info("%s: Setting PCI inbound window "
                                        "greater than memory size\n", name);
-                       mem_log++;
                }
 
                piwar |= ((mem_log - 1) & PIWAR_SZ_MASK);