[PATCH] RISC-V: fix bugon.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
TO: Atish Patra <atish.patra@wdc.com>
CC: Paul Walmsley <paul.walmsley@sifive.com>
CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Albert Ou <aou@eecs.berkeley.edu>
CC: Anup Patel <anup.patel@wdc.com>
CC: Zong Li <zong.li@sifive.com>
CC: Mike Rapoport <rppt@linux.ibm.com>
CC: Kefeng Wang <wangkefeng.wang@huawei.com>
CC: Yash Shah <yash.shah@sifive.com>
CC: linux-riscv(a)lists.infradead.org

From: kernel test robot <lkp@intel.com>

arch/riscv/mm/init.c:258:3-6: WARNING: Use BUG_ON instead of if condition followed by BUG.
Please make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)

 Use BUG_ON instead of a if condition followed by BUG.

Semantic patch information:
 This makes an effort to find cases where BUG() follows an if
 condition on an expression and replaces the if condition and BUG()
 with a BUG_ON having the conditional expression of the if statement
 as argument.

Generated by: scripts/coccinelle/misc/bugon.cocci

Fixes: 4f1b8699833b ("RISC-V: Implement late mapping page table allocation functions")
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://github.com/atishp04/linux uefi_riscv_5.9_v3
head:   6704b94c1a532f3c8d8fcdb9db87313a87350ec8
commit: 4f1b8699833b26397b5667e74d8bce5f12c487eb [16/22] RISC-V: Implement late mapping page table allocation functions
:::::: branch date: 15 hours ago
:::::: commit date: 15 hours ago

Please take the patch only if it's a positive warning. Thanks!

 init.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -254,8 +254,7 @@ static phys_addr_t __init alloc_pte(uint
 	BUG_ON(!mmu_enabled);
 	if (late_mapping) {
 		vaddr = __get_free_page(GFP_KERNEL);
-		if (!vaddr || !pgtable_pte_page_ctor(virt_to_page(vaddr)))
-			BUG();
+		BUG_ON(!vaddr || !pgtable_pte_page_ctor(virt_to_page(vaddr)));
 		return __pa(vaddr);
 	} else
 		return memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE);