xtensa: mmu: fix __arch_mem_map assert message

The assert error messages when l2_page_table_map() fails are not
correct. It returns false when it cannot allocate new L2 table,
and it is not able the address having already mapped. So correct
the error message.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

Author: dcpleung

arch/xtensa/core/ptables.c

@@ -448,12 +448,12 @@ static inline void __arch_mem_map(void *va, uintptr_t pa, uint32_t xtensa_flags,
 
 	ret = l2_page_table_map(xtensa_kernel_ptables, (void *)vaddr, paddr,
 				flags, is_user);
-	__ASSERT(ret, "Virtual address (%p) already mapped", va);
+	__ASSERT(ret, "Cannot map virtual address (%p)", va);
 
 	if (IS_ENABLED(CONFIG_XTENSA_MMU_DOUBLE_MAP) && ret) {
 		ret = l2_page_table_map(xtensa_kernel_ptables, (void *)vaddr_uc, paddr_uc,
 					flags_uc, is_user);
-		__ASSERT(ret, "Virtual address (%p) already mapped", vaddr_uc);
+		__ASSERT(ret, "Cannot map virtual address (%p)", vaddr_uc);
 	}
 
 #ifndef CONFIG_USERSPACE
@@ -470,14 +470,14 @@ static inline void __arch_mem_map(void *va, uintptr_t pa, uint32_t xtensa_flags,
 
 			ret = l2_page_table_map(domain->ptables, (void *)vaddr, paddr,
 						flags, is_user);
-			__ASSERT(ret, "Virtual address (%p) already mapped for domain %p",
+			__ASSERT(ret, "Cannot map virtual address (%p) for domain %p",
 				 vaddr, domain);
 
 			if (IS_ENABLED(CONFIG_XTENSA_MMU_DOUBLE_MAP) && ret) {
 				ret = l2_page_table_map(domain->ptables,
 							(void *)vaddr_uc, paddr_uc,
 							flags_uc, is_user);
-				__ASSERT(ret, "Virtual address (%p) already mapped for domain %p",
+				__ASSERT(ret, "Cannot map virtual address (%p) for domain %p",
 					 vaddr_uc, domain);
 			}
 		}