mm/vmalloc.c:4691:25: error: variable 'addr' is uninitialized when used here [-Werror,-Wuninitialized]

Following build failures noticed on i386 and x86 with clang builds on the Linux next-20240111 tag.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

Build error: ---------- mm/vmalloc.c:4691:25: error: variable 'addr' is uninitialized when used here [-Werror,-Wuninitialized] 4691 | va = __find_vmap_area(addr, &vn->busy.root); | ^~~~ mm/vmalloc.c:4684:20: note: initialize the variable 'addr' to silence this warning 4684 | unsigned long addr; | ^ | = 0 1 error generated.

Links: - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240111/tes...

-- Linaro LKFT https://lkft.linaro.org