KVM: PPC: Book3S HV: Check return value of kvmppc_radix_init

stable inclusion
from stable-v5.10.110
commit c18b538617967581087fb946a556db42949b3ac4
bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c18b538617967581087fb946a556db42949b3ac4

--------------------------------

[ Upstream commit 69ab6ac3 ]

The return of the function is being shadowed by the call to
kvmppc_uvmem_init.

Fixes: ca9f4942 ("KVM: PPC: Book3S HV: Support for running secure guests")
Signed-off-by: NFabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: NNicholas Piggin <npiggin@gmail.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220125155735.1018683-2-farosas@linux.ibm.comSigned-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/powerpc/kvm/book3s_hv.c

@@ -5752,8 +5752,11 @@ static int kvmppc_book3s_init_hv(void)
 	if (r)
 		return r;
 
-	if (kvmppc_radix_possible())
+	if (kvmppc_radix_possible()) {
 		r = kvmppc_radix_init();
+		if (r)
+			return r;
+	}
 
 	/*
 	 * POWER9 chips before version 2.02 can't have some threads in